82_FR_21232 82 FR 21146 - Airworthiness Directives; The Boeing Company Airplanes

82 FR 21146 - Airworthiness Directives; The Boeing Company Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 82, Issue 86 (May 5, 2017)

Page Range21146-21153
FR Document2017-07938

We are revising an earlier proposed airworthiness directive (AD) that proposed to supersede AD 2011-01-15, which applies to certain The Boeing Company Model 757-200, -200CB, and -300 series airplanes. AD 2011-01-15 requires repetitive inspections for cracking of the fuselage skin of the crown skin panel along the chem-milled step at certain stringers, and repair, if necessary. This action revises the notice of proposed rulemaking (NPRM) by reducing the compliance time for certain inspections. We are proposing this AD to address the unsafe condition on these products. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes.

Federal Register, Volume 82 Issue 86 (Friday, May 5, 2017)
[Federal Register Volume 82, Number 86 (Friday, May 5, 2017)]
[Proposed Rules]
[Pages 21146-21153]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2017-07938]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-3697; Directorate Identifier 2015-NM-143-AD]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Supplemental notice of proposed rulemaking (SNPRM); reopening 
of comment period.

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SUMMARY: We are revising an earlier proposed airworthiness directive 
(AD) that proposed to supersede AD 2011-01-15, which applies to certain 
The Boeing Company Model 757-200, -200CB, and -300 series airplanes. AD 
2011-01-15 requires repetitive inspections for cracking of the fuselage 
skin of the crown skin panel along the chem-milled step at certain 
stringers, and repair, if necessary. This action revises the notice of 
proposed rulemaking (NPRM) by reducing the compliance time for certain 
inspections. We are proposing this AD to address the unsafe condition 
on these products. Since these actions impose an additional burden over 
that proposed in the NPRM, we are reopening the comment period to allow 
the public the chance to comment on these proposed changes.

DATES: We must receive comments on this SNPRM by June 19, 2017.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.

[[Page 21147]]

     Fax: 202-493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590.
     Hand Delivery: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590, between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays.
    For service information identified in this SNPRM, contact Boeing 
Commercial Airplanes, Attention: Contractual & Data Services (C&DS), 
2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740; telephone 
562-797-1717; Internet https://www.myboeingfleet.com. You may view this 
referenced service information at the FAA, Transport Airplane 
Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the 
availability of this material at the FAA, call 425-227-1221. It is also 
available on the Internet at http://www.regulations.gov by searching 
for and locating Docket No. FAA-2016-3697.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2016-
3697; or in person at the Docket Management Facility between 9 a.m. and 
5 p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this proposed AD, the regulatory evaluation, any comments 
received, and other information. The street address for the Docket 
Office (phone: 800-647-5527) is in the ADDRESSES section. Comments will 
be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Eric Schrieber, Aerospace Engineer, 
Airframe Branch, ANM-120L, FAA, Los Angeles Aircraft Certification 
Office (ACO), 3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 
562-627-5348; fax: 562-627-5210; email: [email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2016-3697; 
Directorate Identifier 2015-NM-143-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD because of those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    We issued an NPRM to amend 14 CFR part 39 to supersede AD 2011-01-
15, Amendment 39-16572 (76 FR 1351, January 10, 2011) (``AD 2011-01-
15''). AD 2011-01-15 applies to certain The Boeing Company Model 757-
200, -200CB, and -300 series airplanes. AD 2011-01-15 requires 
repetitive inspections for cracking of the fuselage skin of the crown 
skin panel along the chem-milled step at stringers S-4L and S-4R, from 
station (STA) 297 through STA 439, and repair if necessary. AD 2011-01-
15 also includes terminating action for the repetitive inspections of 
the repaired areas only. AD 2011-01-15 resulted from reports of 
cracking in the fuselage skin of the crown skin panel. The NPRM 
published in the Federal Register on February 18, 2016 (81 FR 8157) 
(``The NPRM''). The NPRM was prompted by reports of the initiation of 
new fatigue cracking in the fuselage skin of the crown skin panel along 
locally thinned channels adjacent to the chem-milled steps. The NPRM 
proposed to add repetitive inspections for cracking in additional areas 
and repair if necessary. The NPRM also proposed to remove airplanes 
from the applicability in AD 2011-01-15. The NPRM also proposed to add 
an optional skin panel replacement which would terminate all 
inspections and an optional preventative modification that would 
terminate certain inspections.

Actions Since the NPRM Was Issued

    Since we issued the NPRM, we have received a report that cracking 
was found earlier than the compliance time specified for the Zone 1 
inspections identified in Boeing Special Attention Service Bulletin 
757-53-0097, Revision 2, dated July 28, 2015 (referenced in the NPRM as 
the appropriate source of service information for accomplishing the 
specified actions). Boeing Special Attention Service Bulletin 757-53-
0097, Revision 3, dated December 2, 2016, has been issued to reduce the 
compliance time for the Zone 1 inspections.

Related Service Information Under 1 CFR Part 51

    We reviewed Boeing Special Attention Service Bulletin 757-53-0097, 
Revision 3, dated December 2, 2016. The service information describes 
procedures for repetitive external sliding probe eddy current (EC) and 
external spot-probe-medium-frequency EC inspections for cracking of the 
crown skin panel, repair, a preventive modification, and replacement of 
the crown skin panel. This service information is reasonably available 
because the interested parties have access to it through their normal 
course of business or by the means identified in the ADDRESSES section.

Comments

    We gave the public the opportunity to comment on the NPRM. The 
following presents the comments received on the NPRM and the FAA's 
response to each comment.

Support for the NPRM

    FedEx provided comments that support the intent of the NPRM. FedEx 
also stated that the inspection area is within the affected area of its 
passenger-to-freighter modification per supplemental type certificate 
(STC) ST03562AT. FedEx noted that ST Aerospace will apply for an 
alternative method of compliance (AMOC).

Request To Reduce the Compliance Threshold for Zone 1 Inspections

    Boeing asked that we change paragraph (g)(1) of the proposed AD to 
reduce the compliance threshold for the Zone 1 inspections from 18,000 
to 15,000 total flight cycles. Boeing stated that a grace period could 
be provided for airplanes that have exceeded 15,000 total flight 
cycles. Boeing noted that an operator reported a crack finding in Zone 
1 that occurred on an airplane with 15,722 total flight cycles. Boeing 
added that previous data supported the threshold of 18,000 flight 
cycles, but this new finding supports the 15,000 total flight cycle 
threshold. Boeing stated that since FAA letter 120S14-181, dated March 
26, 2014 (which extends the compliance times specified in AD 2011-01-
15), and Boeing Special Attention Service Bulletin 757-53-0097, 
Revision 2, dated July 28, 2015 (which specifies the 18,000 flight-
cycle compliance time), were released, some operators may have 
suspended or delayed inspections beyond 15,000 total flight cycles and 
up to 18,000 total flight cycles. Boeing added that a short grace 
period of 200 flight cycles or 90 days (which is similar to the grace 
period in AD 2011-01-15) should be applied for

[[Page 21148]]

the initial inspection for airplanes on which the 15,000 total flight 
cycle threshold has been exceeded.
    We agree with the commenter's request to reduce the compliance 
threshold for the Zone 1 inspections from 18,000 to 15,000 total flight 
cycles, for the reasons provided. Boeing Special Attention Service 
Bulletin 757-53-0097, Revision 3, dated December 2, 2016, has been 
issued to reduce the compliance time for the Zone 1 inspections. We 
have changed the compliance time specified in paragraph (g)(1) of this 
proposed AD and added a new paragraph (h) to this proposed AD to 
specify the reduced compliance times.

Effect of Winglets on Accomplishment of the Proposed Actions

    Aviation Partners Boeing stated that accomplishing the STC 
ST01518SE does not affect compliance with the actions specified in the 
NPRM.
    We agree with the commenter. We have redesignated paragraph (c) of 
the proposed AD (in the NPRM) as (c)(1) and added a new paragraph 
(c)(2) to this proposed AD to state that installation of STC ST01518SE 
does not affect the ability to accomplish the proposed actions. 
Therefore, for airplanes on which STC ST01518SE is installed, a 
``change in product'' AMOC approval request is not necessary to comply 
with the requirements of 14 CFR 39.17.

Request To Remove Certain Duplicate Language

    European Air Transport Leipzig GmbH and DHL Air Ltd. asked that we 
remove all duplicated data from the NPRM, and only refer to the 
compliance tables specified in Boeing Special Attention Service 
Bulletin 757-53-0097, Revision 2, dated July 28, 2015. The commenters 
stated that the compliance information is contained in detail in the 
referenced service information, and is repeated in the NPRM without 
benefit of clarification. The commenters added that the stringers 
identified for inspection in paragraphs (g)(3)(i) and (g)(3)(ii) of the 
proposed AD are incorrect, and should refer to inspection Zone 3 
containing stringers S-3L, S-2L, S-1, S-2R, and S-3R.
    We partially agree with the commenters' request. We agree to revise 
this proposed AD for clarity but we do not agree to remove all of the 
details for the required actions in this proposed AD. The stringers 
identified for inspection in paragraphs (g)(3)(i) and (g)(3)(ii) of the 
proposed AD are correct, as specified in the referenced service 
information. However, paragraphs (g)(3)(i) and (g)(3)(ii) of the 
proposed AD (in the NPRM) should have specified between stringers S-3L 
to S-3R instead of ``at stringers S-3L and S-3R.'' Since the stringer 
location is clear in the service information, we have removed the 
reference to the stringers in paragraphs (g)(3)(i) and (g)(3)(ii) of 
this proposed AD. Instead, we have added a reference to the Zone 3 
areas of Boeing Special Attention Service Bulletin 757-53-0097, 
Revision 3, dated December 2, 2016.

Request To Clarify Zone 1 Inspection Language

    Boeing and United Airlines (UA) asked that we clarify the 
inspection language specified in paragraphs (g)(1)(i) and (g)(1)(ii) of 
the proposed AD. Boeing asked that we include ``Zone 1 areas'' and ``as 
applicable'' in the description. UA stated that it appears that the 
inspections are for ``Zone 1 areas.'' Boeing stated that the Zone 1 
areas are clearly delineated in Boeing Special Attention Service 
Bulletin 757-53-0097, Revision 2, dated July 28, 2015.
    We agree with the commenters' request for the reason provided. As 
stated previously, this proposed AD cites Boeing Special Attention 
Service Bulletin 757-53-0097, Revision 3, dated December 2, 2016. We 
have clarified the inspection language in paragraph (g)(1) of this 
proposed AD. We have also clarified similar inspection language in 
paragraph (g)(2) of this proposed AD.

Request To Clarify Optional Terminating Action

    UA asked that we clarify the optional terminating action in 
paragraph (j)(2) of the proposed AD, to eliminate the need for a new 
AMOC as terminating action for the inspections after replacing the 
crown skin panel using a method approved in accordance with paragraph 
(m) of the proposed AD. UA noted that Note (c) of Table 1, Note (b) of 
Table 2, and Note (b) of Table 3 of paragraph 1.E., ``Compliance,'' of 
Boeing Special Attention Service Bulletin 757-53-0097, Revision 2, 
dated July 28, 2015, stipulate that the skin replacement itself is 
considered terminating action to all inspections done in accordance 
with the referenced service information. UA added that this is based on 
the fact that the skin chem-mill process defect should not be present 
in the new skin. UA noted that this method of skin replacement is not 
part of the safety consideration, and should not require a new AMOC.
    We agree with the commenter's request. We have clarified paragraph 
(k)(2) of this proposed AD (which was referred to as paragraph (j)(2) 
of the proposed AD (in the NPRM)) to add replacing the crown skin panel 
in accordance with the Accomplishment Instructions of Boeing Special 
Attention Service Bulletin 757-53-0097, Revision 3, dated December 2, 
2016, or using a method approved in accordance with the procedures 
specified in paragraph (n) of this proposed AD (which was referred to 
as paragraph (m) of the proposed AD (in the NPRM)), terminates the 
inspections.

Request To Address the Possibility That Cracking May Have Been Found 
During Inspections Required by AD 2011-01-15

    Boeing asked that we include the possibility that cracking may have 
been found during the inspections required by paragraph (g) of AD 2011-
01-15 in the provisional requirements of paragraphs (g)(2) and (g)(3) 
of the proposed AD (in the NPRM). Boeing recommended including a 
reference to paragraph (g) of AD 2011-01-15 as follows: ``For airplanes 
on which any crack is found during any inspections required by 
Paragraph (g)(1) of this AD or previously per AD 2011-01-15, Paragraph 
(g); or any repair . . . .'' Boeing added that to exclude this language 
could lead operators to infer that it precludes previous findings from 
inclusion in the provisional statement.
    We acknowledge the commenter's concerns. As of the effective date 
of the final rule following this SNPRM, AD 2011-01-15 will no longer 
exist since it will be superseded by the new AD. For this reason, we do 
not typically refer to a superseded AD in a new AD requirement. 
However, paragraphs (g)(2) and (g)(3) of this proposed AD do include 
findings from paragraph (g) of AD 2011-01-15. Paragraph (h) of AD 2011-
01-15 states that a repair must be done before further flight if any 
crack is found. Therefore, for any crack found before the effective 
date of the final rule, the crack should already have been repaired. 
Paragraph (g)(2) of this proposed AD states ``. . . or any repair is 
installed that covers any portion of the Zone 1 inspection area . . .'' 
and that statement covers the crack findings in AD 2011-01-15.
    In addition, paragraph (m) of this proposed AD provides credit for 
Zone 1 inspections required by paragraph (g)(1) of this proposed AD, if 
those actions were performed before the effective date of the final 
rule using Boeing Special Attention Service Bulletin 757-53-0097, dated 
November 22, 2010; Revision 1, dated January 6, 2011; or Revision 2, 
dated July 28, 2015. We

[[Page 21149]]

have not changed this proposed AD in this regard.

Request To Include Credit for Previous Inspections

    Boeing and UA asked that a new paragraph (l)(3) be added to the 
proposed AD to provide credit for previous inspections done using 
previous revisions of the referenced service information to accomplish 
the inspections in paragraph (g)(1) of this AD. Those inspections were 
approved as an AMOC to AD 2011-01-15.
    We do not agree with the commenter's request. It is not necessary 
to include credit for inspections that were done using previous 
revisions of the referenced service information, because credit for 
those inspections is already provided in paragraph (m) of this proposed 
AD. Therefore, we have not changed this proposed AD in this regard.

Request To Include Credit for Previously Approved Repairs

    UA asked that we include credit language in this proposed AD for 
inspecting previously approved repairs, as specified in Note (a) of 
Table 1, Note (c) of Table 2, and Note (c) of Table 3 of paragraph 
1.E., ``Compliance,'' of Boeing Special Attention Service Bulletin 757-
53-0097, Revision 2, dated July 28, 2015. UA stated that including this 
credit would avoid unnecessary work stoppage and minimize future AMOC 
requests for repairs which meet these criteria.
    We agree that operators are allowed credit for inspecting 
previously approved repairs, as specified in the notes in Tables 1, 2, 
and 3 of paragraph 1.E., ``Compliance,'' of Boeing Special Attention 
Service Bulletin 757-53-0097, Revision 2, dated July 28, 2015. However, 
we do not agree that the language in those notes should be added to 
this proposed AD because Parts 1, 2, and 3 of the Work Instructions of 
Boeing Special Attention Service Bulletin 757-53-0097, Revision 3, 
dated December 2, 2016, also include those credit notes. This proposed 
AD requires accomplishing the specified actions in accordance with the 
Accomplishment Instructions, which includes those notes in the Work 
Instructions; therefore, operators are given credit. We have not 
changed this proposed AD in this regard.

Request To Clarify Certain Inspection Areas

    Boeing and UA asked that we clarify the inspection area in 
paragraphs (g)(2)(i) and (g)(2)(ii) of the proposed AD to include the 
Zone 2 areas, and also that we clarify the inspection area in 
paragraphs (g)(3)(i) and (g)(3)(ii) of the proposed AD to include the 
Zone 3 areas. Boeing and UA stated that the zones are identified in 
Boeing Special Attention Service Bulletin 757-53-0097, Revision 2, 
dated July 28, 2015.
    We agree with the commenters' requests for the reason provided. As 
stated previously, this proposed AD cites Boeing Special Attention 
Service Bulletin 757-53-0097, Revision 3, dated December 2, 2016. We 
have clarified the inspection language in paragraphs (g)(2)(i) and 
(g)(2)(ii), and (g)(3)(i) and (g)(3)(ii), of this proposed AD to 
include the Zone 2 and Zone 3 areas, respectively.

Request To Clarify Sections in Service Information With Inspection 
Instructions

    Boeing asked that we change paragraph (g)(1) of the proposed AD to 
clarify that the inspections should be done using the instructions 
specified in Part 1 or Part 2 of Boeing Special Attention Service 
Bulletin 757-53-0097, Revision 2, dated July 28, 2015. Boeing stated 
that this clarification would avoid confusion.
    We agree with the commenter's request for the reason provided. We 
have clarified paragraphs (g)(1), (g)(1)(i), and (g)(1)(ii) of this 
proposed AD to include doing the inspection as specified in Part 1 or 
Part 2 of Boeing Special Attention Service Bulletin 757-53-0097, 
Revision 3, dated December 2, 2016.
    Boeing and UA asked that we change paragraph (g)(2) of the proposed 
AD to clarify that the Zone 2 inspections should be done using the 
instructions specified in Part 4 or Part 5 of Boeing Special Attention 
Service Bulletin 757-53-0097, Revision 2, dated July 28, 2015. Boeing 
stated that those areas are clearly identified in Boeing Special 
Attention Service Bulletin 757-53-0097, Revision 2, dated July 28, 
2015, and should be included for clarity.
    We agree with the commenter's request for the reason provided. We 
have clarified paragraphs (g)(2), (g)(2)(i), and (g)(2)(ii) of this 
proposed AD to include doing the Zone 2 inspections as specified in 
Part 4 or Part 5 of Boeing Special Attention Service Bulletin 757-53-
0097, Revision 3, dated December 2, 2016.
    Boeing and UA asked that we change paragraph (g)(3) of the proposed 
AD to clarify that the Zone 3 inspections should be done using the 
instructions specified in Part 6 or Part 7 of Boeing Special Attention 
Service Bulletin 757-53-0097, Revision 2, dated July 28, 2015. Boeing 
and UA stated that those areas are clearly identified in Boeing Special 
Attention Service Bulletin 757-53-0097, Revision 2, dated July 28, 
2015, and should be included for clarity.
    We agree with the commenters' request for the reason provided. We 
have clarified paragraphs (g)(3), (g)(3)(i), and (g)(3)(ii) of this 
proposed AD to include doing the Zone 3 inspections as specified in 
Part 6 or Part 7 of Boeing Special Attention Service Bulletin 757-53-
0097, Revision 3, dated December 2, 2016. The reference to Part 6 and 
Part 7 also applies to the repetitive inspections.

Request To Clarify Inspection Language

    Boeing asked that we clarify the inspection language in paragraph 
(j)(1) of the proposed AD to better describe the inspections required 
when doing the preventative modification. Boeing stated that it should 
specify doing high frequency eddy current open-hole inspections for 
cracking in existing fastener holes. Boeing noted that Boeing Special 
Attention Service Bulletin 757-53-0097, Revision 2, dated July 28, 
2015, clearly specifies using an open-hole inspection, and added that 
if this inspection is not defined it would permit operators to do a 
surface inspection around the fasteners, which is not sufficient to 
ensure there is no cracking in the fastener holes.
    Boeing also asked that we change the paragraph identifier at the 
end of paragraph (j)(1) of the proposed AD from (g) to (g)(1) since the 
referenced inspection is actually required by paragraph (g)(1) of the 
proposed AD. Boeing also asked that we change that paragraph identifier 
in paragraphs (l)(1) and (l)(2) of the proposed AD. Boeing stated that 
paragraph (g) of the proposed AD merely refers to the inspection 
paragraphs.
    We agree with the commenter's requests for the reasons provided. We 
have clarified the inspection language in paragraph (k)(1) of this 
proposed AD (which was referred to as paragraph (j)(1) of the proposed 
AD (in the NPRM)) to include ``. . . open-hole inspections for cracking 
in existing fastener holes.''
    We have also changed the paragraph identifiers in paragraphs (k)(1) 
and (m) of this proposed AD (which were referred to as paragraphs 
(j)(1), (l)(1), and (l)(2) of the proposed AD (in the NPRM)) to specify 
paragraph (g)(1) of this proposed AD accordingly.

Request To Clarify the Repair Area

    Boeing asked that we change paragraphs (g)(2) and (g)(3) of the 
proposed AD to clarify that the repair can cover ``any portion'' of the 
Zone 1

[[Page 21150]]

area, and asked that the description be changed to include those words. 
Boeing stated that currently the inspection area specified in those 
paragraphs could be interpreted as a repair that would need to cover 
the entire Zone 1 inspection area; however, operators typically install 
local repairs in areas where cracks are found.
    We agree with the commenter's request for the reason provided. We 
have clarified paragraphs (g)(2) and (g)(3) of this proposed AD to 
include the words ``any portion'' of the Zone 1 repair area to be 
inspected.

Request To Clarify the Description of the Preventative Modification

    Boeing asked that we change paragraphs (g)(2) and (g)(3) of the 
proposed AD to clarify that ``any preventative modification'' is 
actually ``the optional Zone 1 preventative modification specified in 
paragraph (j)(1) of the NPRM.'' Boeing stated that there is only one 
specific preventative modification specified in the referenced service 
information that necessitates the inspections in paragraphs (g)(2) and 
(g)(3) of the proposed AD.
    We agree with the commenter's request for the reason provided. We 
have clarified paragraphs (g)(2) and (g)(3) of this proposed AD to 
include the language provided by the commenter.

Request To Clarify Exceptions

    Boeing asked that we change paragraph (k)(3) of the proposed AD to 
clarify that the exception covers cracking found during any inspection 
required by paragraph (h) or (j)(1) of the proposed AD (in the NPRM). 
Boeing stated repairing any crack found during the inspection before 
installation of the preventative modification in paragraph (h) of the 
proposed AD (in the NPRM) should also be an exception.
    We do not agree with the commenter's request. Paragraph (j) of this 
proposed AD (which was referred to as paragraph (i) of the proposed AD 
(in the NPRM)) already specifies repairing any cracking found during 
any inspection required by paragraph (i) of this proposed AD (which was 
referred to as paragraph (h) of the proposed AD (in the NPRM)), as well 
as inspections required by paragraphs (g)(1), (g)(2), and (g)(3) of 
this proposed AD. Paragraph (k)(3) of the proposed AD (in the NPRM) was 
intended to address cracking found during the preventative modification 
specified in paragraph (j)(1) of the proposed AD (in the NPRM). For 
clarity in this proposed AD, we have added the corrective action for 
cracking found during the inspection specified in paragraph (k)(1) of 
this proposed AD (which was referred to as paragraph (j)(1) of the 
proposed AD (in the NPRM)) into paragraph (k)(1) of this proposed AD. 
We have also removed paragraph (k)(3) of the proposed AD (in the NPRM) 
from this proposed AD.

Request To Clarify Certain AMOC Language

    Two commenters requested that we clarify whether existing AMOCs are 
approved. UA asked that paragraph (m)(4) of the proposed AD (in the 
NPRM) be changed to clarify that repairs approved previously as AMOCs 
to AD 2011-01-15 require no further evaluation or approval. UA stated 
that operators were required to repair any finding with a repair that 
included an AMOC to AD 2011-01-15. UA stated that the current language 
in paragraph (m)(4) of the proposed AD (in the NPRM) would invalidate 
all such AMOCs, forcing operators to submit new requests for approval 
for each previously approved repair. In addition, UA asked that we 
include a new paragraph (l)(3) to provide credit for inspections 
required by paragraph (g)(1) of the proposed AD (in the NPRM) that were 
approved as an AMOC to AD 2011-01-15.
    Boeing asked if paragraph (m)(4) of the proposed AD (in the NPRM) 
meant that new AMOCs are needed for all AMOCs to AD 2011-01-15. Boeing 
asked that credit be given for inspections required by paragraph (g)(1) 
of the proposed AD (in the NPRM) that were approved as an AMOC to AD 
2011-01-15 in Boeing Alternative Method of Compliance Notice 757-53-
0097-AMOC-01, dated March 28, 2011, and stated in FAA letter 120S-11-
13, dated January 19, 2011. Boeing stated that the AMOC allowed a 
longer interval for the inspections that are now incorporated in Boeing 
Special Attention Service Bulletin 757-53-0097, Revision 2, dated July 
28, 2015. Boeing also noted that Boeing Alternative Method of 
Compliance Notice 757-53-0097 AMOC 03, dated March 28, 2014, should be 
rescinded since new data shows that a 15,000 total flight cycle 
threshold is appropriate instead of 18,000 total flight cycles.
    We agree that clarification is necessary. Although paragraph (m)(4) 
of the proposed AD (in the NPRM) specified that AMOCs approved for AD 
2011-01-15, are not approved as AMOCs for the corresponding provisions 
of paragraph (g) of the proposed AD (in the NPRM); after further review 
we have determined those AMOCs should continue to be approved, except 
as of the effective date of this proposed AD, AMOCs that extend the 
initial compliance times specified in AD 2011-01-15 are no longer 
approved for the compliance time extension and instead, the compliance 
times required by this proposed AD must be complied with. Boeing 
Alternative Method of Compliance Notice 757-53-0097 AMOC 03, dated 
March 28, 2014, extended the initial compliance times specified in AD 
2011-01-15, and as stated previously, we have received new data that 
does not justify the extended compliance times. We have changed 
paragraph (n)(4) of this proposed AD (which was referred to as 
paragraph (m)(4) of the proposed AD (in the NPRM)) accordingly.
    Boeing asked that paragraph (m)(3) of the proposed AD (in the NPRM) 
be changed from ``For a repair method to be approved the repair method, 
modification deviation, or alteration deviation must meet the 
certification basis of the airplane and the approval must specifically 
refer to this AD'' to ``For a repair method, modification deviation, or 
alteration deviation to be approved the repair method, modification 
deviation, or alteration deviation must meet the certification basis of 
the airplane and the approval must specifically refer to this AD.'' 
Boeing stated that this approval needs to specify not only for a repair 
method to be approved, but also for modification and alteration 
deviations to be approved, they must meet type certification.
    We agree that some clarification is necessary. We have clarified 
paragraph (n)(3) of this proposed AD (which was referred to as 
paragraph (m)(3) of the proposed AD (in the NPRM)) as follows: ``An 
AMOC that provides an acceptable level of safety may be used for any 
repair, modification, or alteration required by this AD if it is 
approved by the Boeing Commercial Airplanes Organization Designation 
Authorization (ODA) that has been authorized by the Manager, Los 
Angeles ACO, to make those findings. To be approved, the repair method, 
modification deviation, or alteration deviation must meet the 
certification basis of the airplane, and the approval must specifically 
refer to this AD.''

Request To Correct Typographical Error

    Boeing asked that we change the punctuation following the word 
``repair'' in the first sentence of paragraph (m)(3) of the proposed AD 
(in the NPRM) from a period to a comma. Boeing noted that this is a 
punctuation error.
    We agree with the commenter's request and have corrected the

[[Page 21151]]

punctuation in paragraph (n)(3) of this proposed AD (which was referred 
to as paragraph (m)(3) of the proposed AD (in the NPRM)) accordingly.

Concerns About Correcting Unsafe Condition

    A commenter, Jonathan Fortune, stated that it is imperative that 
any potentially catastrophic structural issues identified in any 
airplanes be promptly corrected. Mr. Fortune added that repair costs 
are greatly outweighed by the potential marketing and industry disaster 
that would occur if these airplanes crashed. Mr. Fortune noted that 
Boeing should not be able to operate these airplanes without addressing 
these issues. Mr. Fortune stated that he is willing to pay for 
increased air travel costs in order to get the sense of safety 
established through compliance with this regulation.
    We acknowledge and appreciate the commenter's concerns. The FAA 
works to ensure that all unsafe conditions are addressed in a timely 
manner in accordance with FAA risk management policies that are 
designed to promote aviation safety.

FAA's Determination

    We are proposing this AD because we evaluated all the relevant 
information and determined the unsafe condition described previously is 
likely to exist or develop in other products of the same type design. 
Certain changes described above expand the scope of the NPRM. As a 
result, we have determined that it is necessary to reopen the comment 
period to provide additional opportunity for the public to comment on 
this SNPRM.

Proposed Requirements of This SNPRM

    This SNPRM would require accomplishing the actions specified in the 
service information described previously. For information on the 
procedures and compliance times, see this service information at http://www.regulations.gov by searching for and locating Docket No. FAA-2016-
3697.

Costs of Compliance

    We estimate that this proposed AD affects 652 airplanes of U.S. 
registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
            Action                   Labor cost              Parts cost             product         operators
----------------------------------------------------------------------------------------------------------------
Inspections (Zone 1)           2 work-hour x $85 per  $0......................  $170 per         $110,840 per
 [Retained actions from AD      hour = $170 per                                  inspection       inspection
 2011-01-15].                   inspection cycle.                                cycle.           cycle.
Inspections (Zones 2 and 3)    Up to 4 work-hours x   $0......................  Up to $340 per   Up to $221,680
 [new proposed action].         $85 per hour = Up to                             inspection       per inspection
                                $340 per inspection                              cycle.           cycle.
                                cycle.
Optional modification........  Up to 615 work-hours   Up to $26,496...........  Up to $78,771..  Up to
                                x $85 per hour = Up                                               $51,358,692.
                                to $52,275.
----------------------------------------------------------------------------------------------------------------

    We have received no definitive data that would enable us to provide 
a cost estimate for the on-condition actions specified in this proposed 
AD.
    We have received no definitive data that would enable us to provide 
a cost estimate for the optional replacement specified in this proposed 
AD.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. ``Subtitle VII: Aviation Programs'' 
describes in more detail the scope of the Agency's authority.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would not 
have a substantial direct effect on the States, on the relationship 
between the national Government and the States, or on the distribution 
of power and responsibilities among the various levels of government.
    For the reasons discussed above, I certify this proposed 
regulation:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under the DOT Regulatory Policies 
and Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska, and
    (4) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by removing Airworthiness Directive (AD) 
2011-01-15, Amendment 39-16572 (76 FR 1351, January 10, 2011), and 
adding the following new AD.

The Boeing Company: Docket No. FAA-2016-3697; Directorate Identifier 
2015-NM-143-AD.

(a) Comments Due Date

    We must receive comments by June 19, 2017.

[[Page 21152]]

(b) Affected ADs

    This AD replaces AD 2011-01-15, Amendment 39-16572 (76 FR 1351, 
January 10, 2011) (``AD 2011-01-15'').

(c) Applicability

    (1) This AD applies to The Boeing Company Model 757-200 and -300 
series airplanes, certificated in any category, as identified in 
Boeing Special Attention Service Bulletin 757-53-0097, Revision 3, 
dated December 2, 2016.
    (2) Installation of Supplemental Type Certificate (STC) 
ST01518SE (http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgSTC.nsf/0/38B606833BBD98B386257FAA00602538?OpenDocument&Highlight=st01518se) 
does not affect the ability to accomplish the actions required by 
this AD. Therefore, for airplanes on which STC ST01518SE is 
installed, a ``change in product'' alternative method of compliance 
(AMOC) approval request is not necessary to comply with the 
requirements of 14 CFR 39.17.

(d) Subject

    Air Transport Association (ATA) of America Code 53, Fuselage.

(e) Unsafe Condition

    This AD was prompted by reports of the initiation of fatigue 
cracking in the fuselage skin of the crown skin panel along locally 
thinned channels adjacent to the chem-milled steps. We are issuing 
this AD to detect and correct fatigue cracking of the fuselage skin 
of the crown skin panel, which could result in pressure venting and 
consequent rapid decompression of the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Repetitive Inspections

    Do the applicable inspections required by paragraphs (g)(1), 
(g)(2), and (g)(3) of this AD.
    (1) For all airplanes: Within the compliance time specified in 
paragraph (h) of this AD, do the Zone 1 inspection specified in 
paragraph (g)(1)(i) or (g)(1)(ii) of this AD. Repeat the applicable 
Part 1 or Part 2 inspection thereafter at the applicable times 
specified in table 1 of paragraph 1.E., ``Compliance,'' of Boeing 
Special Attention Service Bulletin 757-53-0097, Revision 3, dated 
December 2, 2016. Accomplishing the preventative modification 
specified in paragraph (k)(1) of this AD or the replacement 
specified in paragraph (k)(2) of this AD terminates the inspections 
required by this paragraph.
    (i) Do an external sliding probe eddy current (EC) inspection 
for cracking of the crown skin panel in the applicable Zone 1 areas 
specified in, and in accordance with, Part 1 of the Accomplishment 
Instructions of Boeing Special Attention Service Bulletin 757-53-
0097, Revision 3, dated December 2, 2016.
    (ii) Do an external spot-probe-medium-frequency EC inspection 
for cracking of the crown skin panel in the applicable Zone 1 areas 
specified in, and in accordance with Part 2 of the Accomplishment 
Instructions of Boeing Special Attention Service Bulletin 757-53-
0097, Revision 3, dated December 2, 2016.
    (2) For airplanes on which any crack is found during any 
inspection required by paragraph (g)(1) of this AD; or any repair is 
installed that covers any portion of the Zone 1 inspection area 
specified in Boeing Special Attention Service Bulletin 757-53-0097, 
Revision 3, dated December 2, 2016; or the optional Zone 1 
preventative modification specified in paragraph (k)(1) of this AD 
is installed: At the applicable time specified in table 2 of 
paragraph 1.E., ``Compliance,'' of Boeing Special Attention Service 
Bulletin 757-53-0097, Revision 3, dated December 2, 2016, except as 
required by paragraph (l)(1) of this AD: Do the Zone 2 inspection 
specified in paragraph (g)(2)(i) or (g)(2)(ii) of this AD. Repeat 
the applicable Part 4 or Part 5 inspection thereafter at the 
applicable times specified in table 2 of paragraph 1.E., 
``Compliance,'' of Boeing Special Attention Service Bulletin 757-53-
0097, Revision 3, dated December 2, 2016. Accomplishing the 
replacement specified in paragraph (k)(2) of this AD terminates the 
inspections required by this paragraph.
    (i) Do an external sliding probe EC inspection for cracking of 
the crown skin panel in the applicable Zone 2 areas specified in, 
and in accordance with, Part 4 of the Accomplishment Instructions of 
Boeing Special Attention Service Bulletin 757-53-0097, Revision 3, 
dated December 2, 2016.
    (ii) Do an external spot-probe-medium-frequency EC inspection 
for cracking of the crown skin panel in the applicable Zone 2 areas 
specified in, and in accordance with, Part 5 of the Accomplishment 
Instructions of Boeing Special Attention Service Bulletin 757-53-
0097, Revision 3, dated December 2, 2016.
    (3) For airplanes on which any crack is found during any 
inspection required by paragraph (g)(1) of this AD; or any repair is 
installed that covers any portion of the Zone 1 inspection area 
specified in Boeing Special Attention Service Bulletin 757-53-0097, 
Revision 3, dated December 2, 2016; or the optional Zone 1 
preventative modification specified in paragraph (k)(1) of this AD 
is installed: At the applicable time specified in table 3 of 
paragraph 1.E., ``Compliance,'' of Boeing Special Attention Service 
Bulletin 757-53-0097, Revision 3, dated December 2, 2016, except as 
required by paragraph (l)(1) of this AD, do the Zone 3 inspection 
specified in paragraph (g)(3)(i) or (g)(3)(ii) of this AD. Repeat 
the applicable Part 6 or Part 7 inspection thereafter at the 
applicable times specified in table 3 of paragraph 1.E., 
``Compliance,'' of Boeing Special Attention Service Bulletin 757-53-
0097, Revision 3, dated December 2, 2016. Accomplishing the 
replacement specified in paragraph (k)(2) of this AD terminates the 
inspections required by this paragraph.
    (i) Do an external sliding probe EC inspection for cracking of 
the crown skin panel in the applicable Zone 3 areas specified in, 
and in accordance with, Part 6 of the Accomplishment Instructions of 
Boeing Special Attention Service Bulletin 757-53-0097, Revision 3, 
dated December 2, 2016.
    (ii) Do an external spot-probe-medium-frequency EC inspection 
for cracking of the crown skin panel in the applicable Zone 3 areas, 
specified in, and in accordance with, Part 7 of the Accomplishment 
Instructions of Boeing Special Attention Service Bulletin 757-53-
0097, Revision 3, dated December 2, 2016.

(h) Initial Compliance Time for Inspection Required by Paragraph (g)(1) 
of This AD

    Within the applicable compliance times specified in paragraphs 
(h)(1), (h)(2), (h)(3), and (h)(4) of this AD, whichever occurs 
latest: Do the initial inspection required by paragraph (g)(1) of 
this AD.
    (1) For all airplanes: Before the accumulation of 15,000 total 
flight cycles.
    (2) For airplanes on which an external sliding probe EC 
inspection for Zone 1, as specified in Boeing Special Attention 
Service Bulletin 757-53-0097, has been done as of the effective date 
of this AD: Within 620 flight cycles after accomplishing the most 
recent external sliding probe EC inspection for Zone 1.
    (3) For airplanes on which an external spot-probe-medium-
frequency EC inspection for Zone 1, as specified in Boeing Special 
Attention Service Bulletin 757-53-0097, has been done as of the 
effective date of this AD: Within 200 flight cycles after 
accomplishing the most recent external spot-probe-medium-frequency 
EC inspection for Zone 1.
    (4) For all airplanes: Within 200 flight cycles or 90 days after 
the effective date of this AD, whichever occurs first.

(i) Post-Preventive Modification Supplemental Inspections

    For airplanes on which a preventive modification has been 
installed as specified in Part 3 of the Accomplishment Instructions 
of Boeing Special Attention Service Bulletin 757-53-0097, Revision 
3, dated December 2, 2016: At the applicable time specified in table 
4 of paragraph 1.E., ``Compliance,'' of Boeing Special Attention 
Service Bulletin 757-53-0097, Revision 3, dated December 2, 2016; do 
eddy current and detailed inspections for cracking of the applicable 
areas of the fuselage skin of the doublers, triplers, and fillers of 
the preventive modification, in accordance with the Accomplishment 
Instructions of Boeing Special Attention Service Bulletin 757-53-
0097, Revision 3, dated December 2, 2016. Repeat the inspection 
thereafter at the applicable times specified in table 4 of paragraph 
1.E., ``Compliance,'' of Boeing Special Attention Service Bulletin 
757-53-0097, Revision 3, dated December 2, 2016.

(j) Repair

    If any cracking is found during any inspection required by 
paragraph (g)(1), (g)(2), (g)(3), or (i) of this AD, repair before 
further flight using a method approved in accordance with the 
procedures specified in paragraph (n) of this AD. Doing the repair 
ends the repetitive inspections for the repaired area only.

[[Page 21153]]

(k) Optional Terminating Actions

    (1) Accomplishing the preventative modification, including doing 
high frequency EC open-hole inspections for cracking in the existing 
fastener holes, in accordance with Part 3 of the Accomplishment 
Instructions of Boeing Special Attention Service Bulletin 757-53-
0097, Revision 3, dated December 2, 2016, except as required by 
paragraph (l)(2) of this AD, terminates the inspections required by 
paragraph (g)(1) of this AD, provided the preventative modification 
is done before further flight after accomplishing an inspection 
required by paragraph (g)(1) of this AD. If any cracking is found 
during any high frequency EC open-hole inspection, before further 
flight, repair using a method approved in accordance with the 
procedures specified in paragraph (n) of this AD.
    (2) Replacing the crown skin panel between station (STA) 297 and 
STA 439, and stringers S-4L and S-4R, in accordance with the 
Accomplishment Instructions of Boeing Special Attention Service 
Bulletin 757-53-0097, Revision 3, dated December 2, 2016, or using a 
method approved in accordance with the procedures specified in 
paragraph (n) of this AD, terminates the inspections required by 
paragraphs (g)(1), (g)(2), and (g)(3) of this AD.

(l) Exceptions to Service Information Specifications and Preventative 
Modification

    (1) Where Boeing Special Attention Service Bulletin 757-53-0097, 
Revision 3, dated December 2, 2016, specifies a compliance time 
``after the Revision 2 date of this service bulletin,'' or ``after 
the Revision 3 date of this service bulletin,'' this AD requires 
compliance within the specified compliance time after the effective 
date of this AD.
    (2) Where Boeing Special Attention Service Bulletin 757-53-0097, 
Revision 3, dated December 2, 2016, specifies to contact Boeing for 
repair instructions: Before further flight, repair using a method 
approved in accordance with the procedures specified in paragraph 
(n) of this AD.

(m) Credit for Previous Actions

    This paragraph provides credit for Zone 1 inspections required 
by paragraph (g)(1) of this AD, if those actions were performed 
before the effective date of this AD using Boeing Special Attention 
Service Bulletin 757-53-0097, dated November 22, 2010 (which was 
incorporated by reference in AD 2011-01-15); Boeing Special 
Attention Service Bulletin 757-53-0097, Revision 1, dated January 6, 
2011; or Boeing Special Attention Service Bulletin 757-53-0097, 
Revision 2, dated July 28, 2015.

(n) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Los Angeles Aircraft Certification Office 
(ACO), FAA, has the authority to approve AMOCs for this AD, if 
requested using the procedures found in 14 CFR 39.19. In accordance 
with 14 CFR 39.19, send your request to your principal inspector or 
local Flight Standards District Office, as appropriate. If sending 
information directly to the manager of the ACO, send it to the 
attention of the person identified in paragraph (o)(1) of this AD. 
Information may be emailed to: [email protected].
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.
    (3) An AMOC that provides an acceptable level of safety may be 
used for any repair, modification, or alteration required by this AD 
if it is approved by the Boeing Commercial Airplanes Organization 
Designation Authorization (ODA) that has been authorized by the 
Manager, Los Angeles ACO, to make those findings. To be approved, 
the repair method, modification deviation, or alteration deviation 
must meet the certification basis of the airplane, and the approval 
must specifically refer to this AD.
    (4) AMOCs approved for AD 2011-01-15 are approved as AMOCs for 
the corresponding provisions of paragraph (g) of this AD; except, as 
of the effective date of this AD, AMOCs that extend the initial 
compliance times specified in AD 2011-01-15 are no longer approved 
for the compliance time extension and the compliance times required 
by this AD must be complied with.
    (5) For service information that contains steps that are labeled 
as Required for Compliance (RC), the provisions of paragraphs 
(n)(5)(i) and (n)(5)(ii) apply.
    (i) The steps labeled as RC, including substeps under an RC step 
and any figures identified in an RC step, must be done to comply 
with the AD. An AMOC is required for any deviations to RC steps, 
including substeps and identified figures.
    (ii) Steps not labeled as RC may be deviated from using accepted 
methods in accordance with the operator's maintenance or inspection 
program without obtaining approval of an AMOC, provided the RC 
steps, including substeps and identified figures, can still be done 
as specified, and the airplane can be put back in an airworthy 
condition.

(o) Related Information

    (1) For more information about this AD, contact Eric Schrieber, 
Aerospace Engineer, Airframe Branch, ANM-120L, FAA, Los Angeles ACO, 
3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 562-627-
5348; fax: 562-627-5210; email: [email protected].
    (2) For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Contractual & Data Services 
(C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740; 
telephone 562-797-1717; Internet https://www.myboeingfleet.com. You 
may view this referenced service information at the FAA, Transport 
Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For 
information on the availability of this material at the FAA, call 
425-227-1221.

    Issued in Renton, Washington, on April 7, 2017.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2017-07938 Filed 5-4-17; 8:45 am]
BILLING CODE 4910-13-P



                                                    21146                       Federal Register / Vol. 82, No. 86 / Friday, May 5, 2017 / Proposed Rules

                                                                                              FIGURE 1 TO PARAGRAPH (c) OF THIS AD—GEARBOX S/NS
                                                        00095             00107              00139                00160           00171               00172          00179          00189          00224

                                                        00327             00396              00432                00459           00481               00564          00688          00697          00884

                                                        00923             00957              01019                01048           01081               01082          01106          01125          01236

                                                        01237             01241              01245                01288           01311               01314          01351          01357          01361

                                                        01388             01418              01427                01487           01529               01534          01561          01598          01634

                                                        01655             01704              01711                01755           01762               01786          01844          01881          01883

                                                        01884             01887              01891                01893           01904               01928          01933          01935          01951

                                                        01977             01978              01986                02026           02040               02041          02127          02141          02167

                                                        02189             02228              02289                02298           02304               02314          02316          02354          02432



                                                    (d) Subject                                             (h) Alternative Methods of Compliance                 DEPARTMENT OF TRANSPORTATION
                                                      Joint Aircraft System Component (JASC)                (AMOCs)
                                                    Code 8510, Reciprocating Engine Front                     The Manager, Engine Certification Office,           Federal Aviation Administration
                                                    Section.                                                FAA, may approve AMOCs for this AD. Use
                                                                                                            the procedures found in 14 CFR 39.19 to               14 CFR Part 39
                                                    (e) Reason
                                                                                                            make your request. You may email your                 [Docket No. FAA–2016–3697; Directorate
                                                      This AD was prompted by a loss of engine              request to: ANE-AD-AMOC@faa.gov.                      Identifier 2015–NM–143–AD]
                                                    power in flight caused by oil leaking from the
                                                    gearbox radial shaft sealing ring that                  (i) Related Information                               RIN 2120–AA64
                                                    contaminated the clutch. We are proposing                  (1) For more information about this AD,
                                                    this AD to prevent failure of the clutch, loss          contact Robert Green, Aerospace Engineer,             Airworthiness Directives; The Boeing
                                                    of engine power in flight, and reduced                  Engine Certification Office, FAA, Engine &            Company Airplanes
                                                    control of the airplane.                                Propeller Directorate, 1200 District Avenue,          AGENCY:  Federal Aviation
                                                                                                            Burlington, MA 01803; phone: 781–238–                 Administration (FAA), DOT.
                                                    (f) Compliance
                                                                                                            7754; fax: 781–238–7199; email:                       ACTION: Supplemental notice of
                                                       (1) Comply with this AD within the                   robert.green@faa.gov.
                                                    compliance times specified, unless already                                                                    proposed rulemaking (SNPRM);
                                                                                                               (2) Refer to MCAI European Aviation
                                                    done.                                                                                                         reopening of comment period.
                                                                                                            Safety Agency AD 2017–0034, dated
                                                       (2) Within 55 flight hours after the effective       February 20, 2017, for more information. You          SUMMARY:   We are revising an earlier
                                                    date of this AD:                                        may examine the MCAI in the AD docket on              proposed airworthiness directive (AD)
                                                       (i) Replace the clutch with a dual mass              the Internet at http://www.regulations.gov by         that proposed to supersede AD 2011–
                                                    flywheel. Use Technify Motors Service                   searching for and locating it in Docket No.
                                                    Bulletin (SB) No. SB TMG 125–1020 P1,
                                                                                                                                                                  01–15, which applies to certain The
                                                                                                            FAA–2017–0241.                                        Boeing Company Model 757–200,
                                                    Initial Issue, dated January 27, 2016, to do               (3) Technify Motors GmbH Service Bulletin
                                                    the replacement.                                                                                              –200CB, and –300 series airplanes. AD
                                                                                                            SB No. SB TMG 125–1020 P1, Initial Issue,             2011–01–15 requires repetitive
                                                       (ii) Install a start phase monitoring system
                                                                                                            dated January 27, 2016, can be obtained from          inspections for cracking of the fuselage
                                                    and software mapping in accordance with the
                                                                                                            Technify Motors GmbH using the contact                skin of the crown skin panel along the
                                                    requirements of FAA AD 2015–21–01 (80 FR
                                                                                                            information in paragraph (i)(4) of this AD.           chem-milled step at certain stringers,
                                                    64314, October 23, 2015); and
                                                                                                               (4) For service information identified in          and repair, if necessary. This action
                                                       (iii) Inspect the rear radial shaft sealing
                                                                                                            this proposed AD, contact Technify Motors             revises the notice of proposed
                                                    ring on the gearbox for oil leakage in
                                                                                                            GmbH, Platanenstrasse 14, D–09356 Sankt               rulemaking (NPRM) by reducing the
                                                    accordance with Figures 2 and 3 of Technify
                                                                                                            Egidien, Germany; phone: +49 37204 696 0;             compliance time for certain inspections.
                                                    Motors SB No. SB TMG 125–1020 P1, Initial
                                                                                                            fax: +49 37204 696 29125; email: info@
                                                    Issue, dated January 27, 2016. If an oil leak                                                                 We are proposing this AD to address the
                                                                                                            centurion-engines.com.
                                                    is detected, replace the gearbox with a part                                                                  unsafe condition on these products.
                                                    eligible for installation before the next flight.          (5) You may view this service information
                                                                                                                                                                  Since these actions impose an
                                                                                                            at the FAA, Engine & Propeller Directorate,
                                                    (g) Installation Prohibition                                                                                  additional burden over that proposed in
                                                                                                            1200 District Avenue, Burlington, MA. For
                                                                                                                                                                  the NPRM, we are reopening the
                                                      After the effective date of this AD:                  information on the availability of this
                                                                                                                                                                  comment period to allow the public the
                                                      (1) Do not install an engine that is                  material at the FAA, call 781–238–7125.
                                                                                                                                                                  chance to comment on these proposed
                                                    equipped with a clutch and has an affected                Issued in Burlington, Massachusetts, on             changes.
                                                    gearbox listed in Figure 1 to paragraph (c) of          April 28, 2017.                                       DATES: We must receive comments on
jstallworth on DSK7TPTVN1PROD with PROPOSALS




                                                    this AD;
                                                                                                            Robert J. Ganley,                                     this SNPRM by June 19, 2017.
                                                      (2) Do not install an affected gearbox on an
                                                    engine unless it has passed the inspection              Acting Manager, Engine & Propeller                    ADDRESSES: You may send comments,
                                                    required by paragraph (f)(2)(iii) of this AD;           Directorate, Aircraft Certification Service.          using the procedures found in 14 CFR
                                                    and                                                     [FR Doc. 2017–09040 Filed 5–4–17; 8:45 am]            11.43 and 11.45, by any of the following
                                                      (3) Do not install a clutch on an engine              BILLING CODE 4910–13–P                                methods:
                                                    previously modified in accordance with the                                                                      • Federal eRulemaking Portal: Go to
                                                    requirements of paragraph (f)(2) of this AD or                                                                http://www.regulations.gov. Follow the
                                                    already incorporating a dual mass flywheel.                                                                   instructions for submitting comments.


                                               VerDate Sep<11>2014   14:02 May 04, 2017   Jkt 241001   PO 00000   Frm 00005   Fmt 4702   Sfmt 4702   E:\FR\FM\05MYP1.SGM   05MYP1


                                                                                Federal Register / Vol. 82, No. 86 / Friday, May 5, 2017 / Proposed Rules                                            21147

                                                      • Fax: 202–493–2251.                                  comments on the overall regulatory,                   Related Service Information Under 1
                                                      • Mail: U.S. Department of                            economic, environmental, and energy                   CFR Part 51
                                                    Transportation, Docket Operations,                      aspects of this proposed AD. We will                     We reviewed Boeing Special
                                                    M–30, West Building Ground Floor,                       consider all comments received by the                 Attention Service Bulletin 757–53–
                                                    Room W12–140, 1200 New Jersey                           closing date and may amend this                       0097, Revision 3, dated December 2,
                                                    Avenue SE., Washington, DC 20590.                       proposed AD because of those                          2016. The service information describes
                                                      • Hand Delivery: U.S. Department of                   comments.                                             procedures for repetitive external
                                                    Transportation, Docket Operations,                        We will post all comments we                        sliding probe eddy current (EC) and
                                                    M–30, West Building Ground Floor,                       receive, without change, to http://                   external spot-probe-medium-frequency
                                                    Room W12–140, 1200 New Jersey                           www.regulations.gov, including any                    EC inspections for cracking of the crown
                                                    Avenue SE., Washington, DC 20590,                       personal information you provide. We                  skin panel, repair, a preventive
                                                    between 9 a.m. and 5 p.m., Monday                       will also post a report summarizing each              modification, and replacement of the
                                                    through Friday, except Federal holidays.                substantive verbal contact we receive                 crown skin panel. This service
                                                      For service information identified in                 about this proposed AD.                               information is reasonably available
                                                    this SNPRM, contact Boeing                              Discussion                                            because the interested parties have
                                                    Commercial Airplanes, Attention:                                                                              access to it through their normal course
                                                    Contractual & Data Services (C&DS),                       We issued an NPRM to amend 14 CFR
                                                                                                            part 39 to supersede AD 2011–01–15,                   of business or by the means identified
                                                    2600 Westminster Blvd., MC 110–SK57,                                                                          in the ADDRESSES section.
                                                    Seal Beach, CA 90740; telephone 562–                    Amendment 39–16572 (76 FR 1351,
                                                    797–1717; Internet https://                             January 10, 2011) (‘‘AD 2011–01–15’’).                Comments
                                                    www.myboeingfleet.com. You may view                     AD 2011–01–15 applies to certain The                    We gave the public the opportunity to
                                                    this referenced service information at                  Boeing Company Model 757–200,                         comment on the NPRM. The following
                                                                                                            –200CB, and –300 series airplanes. AD                 presents the comments received on the
                                                    the FAA, Transport Airplane
                                                                                                            2011–01–15 requires repetitive                        NPRM and the FAA’s response to each
                                                    Directorate, 1601 Lind Avenue SW.,
                                                                                                            inspections for cracking of the fuselage              comment.
                                                    Renton, WA. For information on the
                                                                                                            skin of the crown skin panel along the
                                                    availability of this material at the FAA,                                                                     Support for the NPRM
                                                                                                            chem-milled step at stringers S–4L and
                                                    call 425–227–1221. It is also available
                                                                                                            S–4R, from station (STA) 297 through                    FedEx provided comments that
                                                    on the Internet at http://
                                                                                                            STA 439, and repair if necessary. AD                  support the intent of the NPRM. FedEx
                                                    www.regulations.gov by searching for
                                                                                                            2011–01–15 also includes terminating                  also stated that the inspection area is
                                                    and locating Docket No. FAA–2016–
                                                                                                            action for the repetitive inspections of              within the affected area of its passenger-
                                                    3697.
                                                                                                            the repaired areas only. AD 2011–01–15                to-freighter modification per
                                                    Examining the AD Docket                                 resulted from reports of cracking in the              supplemental type certificate (STC)
                                                                                                            fuselage skin of the crown skin panel.                ST03562AT. FedEx noted that ST
                                                       You may examine the AD docket on
                                                                                                            The NPRM published in the Federal                     Aerospace will apply for an alternative
                                                    the Internet at http://
                                                                                                            Register on February 18, 2016 (81 FR                  method of compliance (AMOC).
                                                    www.regulations.gov by searching for
                                                                                                            8157) (‘‘The NPRM’’). The NPRM was
                                                    and locating Docket No. FAA–2016–                                                                             Request To Reduce the Compliance
                                                                                                            prompted by reports of the initiation of
                                                    3697; or in person at the Docket                                                                              Threshold for Zone 1 Inspections
                                                                                                            new fatigue cracking in the fuselage skin
                                                    Management Facility between 9 a.m.
                                                                                                            of the crown skin panel along locally                    Boeing asked that we change
                                                    and 5 p.m., Monday through Friday,
                                                                                                            thinned channels adjacent to the chem-                paragraph (g)(1) of the proposed AD to
                                                    except Federal holidays. The AD docket
                                                                                                            milled steps. The NPRM proposed to                    reduce the compliance threshold for the
                                                    contains this proposed AD, the
                                                                                                            add repetitive inspections for cracking               Zone 1 inspections from 18,000 to
                                                    regulatory evaluation, any comments
                                                                                                            in additional areas and repair if                     15,000 total flight cycles. Boeing stated
                                                    received, and other information. The
                                                                                                            necessary. The NPRM also proposed to                  that a grace period could be provided
                                                    street address for the Docket Office
                                                                                                            remove airplanes from the applicability               for airplanes that have exceeded 15,000
                                                    (phone: 800–647–5527) is in the
                                                                                                            in AD 2011–01–15. The NPRM also                       total flight cycles. Boeing noted that an
                                                    ADDRESSES section. Comments will be
                                                                                                            proposed to add an optional skin panel                operator reported a crack finding in
                                                    available in the AD docket shortly after                                                                      Zone 1 that occurred on an airplane
                                                                                                            replacement which would terminate all
                                                    receipt.                                                                                                      with 15,722 total flight cycles. Boeing
                                                                                                            inspections and an optional
                                                    FOR FURTHER INFORMATION CONTACT: Eric                   preventative modification that would                  added that previous data supported the
                                                    Schrieber, Aerospace Engineer,                          terminate certain inspections.                        threshold of 18,000 flight cycles, but
                                                    Airframe Branch, ANM–120L, FAA, Los                                                                           this new finding supports the 15,000
                                                    Angeles Aircraft Certification Office                   Actions Since the NPRM Was Issued                     total flight cycle threshold. Boeing
                                                    (ACO), 3960 Paramount Boulevard,                           Since we issued the NPRM, we have                  stated that since FAA letter 120S14–
                                                    Lakewood, CA 90712–4137; phone:                         received a report that cracking was                   181, dated March 26, 2014 (which
                                                    562–627–5348; fax: 562–627–5210;                        found earlier than the compliance time                extends the compliance times specified
                                                    email: eric.schrieber@faa.gov.                          specified for the Zone 1 inspections                  in AD 2011–01–15), and Boeing Special
                                                    SUPPLEMENTARY INFORMATION:                              identified in Boeing Special Attention                Attention Service Bulletin 757–53–
                                                                                                            Service Bulletin 757–53–0097, Revision                0097, Revision 2, dated July 28, 2015
                                                    Comments Invited                                        2, dated July 28, 2015 (referenced in the             (which specifies the 18,000 flight-cycle
jstallworth on DSK7TPTVN1PROD with PROPOSALS




                                                      We invite you to send any written                     NPRM as the appropriate source of                     compliance time), were released, some
                                                    relevant data, views, or arguments about                service information for accomplishing                 operators may have suspended or
                                                    this proposed AD. Send your comments                    the specified actions). Boeing Special                delayed inspections beyond 15,000 total
                                                    to an address listed under the                          Attention Service Bulletin 757–53–                    flight cycles and up to 18,000 total flight
                                                    ADDRESSES section. Include ‘‘Docket No.                 0097, Revision 3, dated December 2,                   cycles. Boeing added that a short grace
                                                    FAA–2016–3697; Directorate Identifier                   2016, has been issued to reduce the                   period of 200 flight cycles or 90 days
                                                    2015–NM–143–AD’’ at the beginning of                    compliance time for the Zone 1                        (which is similar to the grace period in
                                                    your comments. We specifically invite                   inspections.                                          AD 2011–01–15) should be applied for


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                                                    21148                       Federal Register / Vol. 82, No. 86 / Friday, May 5, 2017 / Proposed Rules

                                                    the initial inspection for airplanes on                 (g)(3)(i) and (g)(3)(ii) of the proposed AD           referred to as paragraph (j)(2) of the
                                                    which the 15,000 total flight cycle                     (in the NPRM) should have specified                   proposed AD (in the NPRM)) to add
                                                    threshold has been exceeded.                            between stringers S–3L to S–3R instead                replacing the crown skin panel in
                                                       We agree with the commenter’s                        of ‘‘at stringers S–3L and S–3R.’’ Since              accordance with the Accomplishment
                                                    request to reduce the compliance                        the stringer location is clear in the                 Instructions of Boeing Special Attention
                                                    threshold for the Zone 1 inspections                    service information, we have removed                  Service Bulletin 757–53–0097, Revision
                                                    from 18,000 to 15,000 total flight cycles,              the reference to the stringers in                     3, dated December 2, 2016, or using a
                                                    for the reasons provided. Boeing Special                paragraphs (g)(3)(i) and (g)(3)(ii) of this           method approved in accordance with
                                                    Attention Service Bulletin 757–53–                      proposed AD. Instead, we have added a                 the procedures specified in paragraph
                                                    0097, Revision 3, dated December 2,                     reference to the Zone 3 areas of Boeing               (n) of this proposed AD (which was
                                                    2016, has been issued to reduce the                     Special Attention Service Bulletin 757–               referred to as paragraph (m) of the
                                                    compliance time for the Zone 1                          53–0097, Revision 3, dated December 2,                proposed AD (in the NPRM)), terminates
                                                    inspections. We have changed the                        2016.                                                 the inspections.
                                                    compliance time specified in paragraph
                                                    (g)(1) of this proposed AD and added a                  Request To Clarify Zone 1 Inspection                  Request To Address the Possibility That
                                                    new paragraph (h) to this proposed AD                   Language                                              Cracking May Have Been Found During
                                                    to specify the reduced compliance                          Boeing and United Airlines (UA)                    Inspections Required by AD 2011–01–
                                                    times.                                                  asked that we clarify the inspection                  15
                                                                                                            language specified in paragraphs                         Boeing asked that we include the
                                                    Effect of Winglets on Accomplishment                    (g)(1)(i) and (g)(1)(ii) of the proposed
                                                    of the Proposed Actions                                                                                       possibility that cracking may have been
                                                                                                            AD. Boeing asked that we include                      found during the inspections required
                                                       Aviation Partners Boeing stated that                 ‘‘Zone 1 areas’’ and ‘‘as applicable’’ in             by paragraph (g) of AD 2011–01–15 in
                                                    accomplishing the STC ST01518SE does                    the description. UA stated that it                    the provisional requirements of
                                                    not affect compliance with the actions                  appears that the inspections are for                  paragraphs (g)(2) and (g)(3) of the
                                                    specified in the NPRM.                                  ‘‘Zone 1 areas.’’ Boeing stated that the              proposed AD (in the NPRM). Boeing
                                                       We agree with the commenter. We                      Zone 1 areas are clearly delineated in                recommended including a reference to
                                                    have redesignated paragraph (c) of the                  Boeing Special Attention Service                      paragraph (g) of AD 2011–01–15 as
                                                    proposed AD (in the NPRM) as (c)(1)                     Bulletin 757–53–0097, Revision 2, dated               follows: ‘‘For airplanes on which any
                                                    and added a new paragraph (c)(2) to this                July 28, 2015.                                        crack is found during any inspections
                                                    proposed AD to state that installation of                  We agree with the commenters’
                                                                                                                                                                  required by Paragraph (g)(1) of this AD
                                                    STC ST01518SE does not affect the                       request for the reason provided. As
                                                                                                                                                                  or previously per AD 2011–01–15,
                                                    ability to accomplish the proposed                      stated previously, this proposed AD
                                                                                                                                                                  Paragraph (g); or any repair . . . .’’
                                                    actions. Therefore, for airplanes on                    cites Boeing Special Attention Service
                                                                                                                                                                  Boeing added that to exclude this
                                                    which STC ST01518SE is installed, a                     Bulletin 757–53–0097, Revision 3, dated
                                                                                                                                                                  language could lead operators to infer
                                                    ‘‘change in product’’ AMOC approval                     December 2, 2016. We have clarified the
                                                                                                                                                                  that it precludes previous findings from
                                                    request is not necessary to comply with                 inspection language in paragraph (g)(1)
                                                                                                                                                                  inclusion in the provisional statement.
                                                    the requirements of 14 CFR 39.17.                       of this proposed AD. We have also
                                                                                                            clarified similar inspection language in                 We acknowledge the commenter’s
                                                    Request To Remove Certain Duplicate                                                                           concerns. As of the effective date of the
                                                                                                            paragraph (g)(2) of this proposed AD.
                                                    Language                                                                                                      final rule following this SNPRM, AD
                                                       European Air Transport Leipzig                       Request To Clarify Optional                           2011–01–15 will no longer exist since it
                                                    GmbH and DHL Air Ltd. asked that we                     Terminating Action                                    will be superseded by the new AD. For
                                                    remove all duplicated data from the                        UA asked that we clarify the optional              this reason, we do not typically refer to
                                                    NPRM, and only refer to the compliance                  terminating action in paragraph (j)(2) of             a superseded AD in a new AD
                                                    tables specified in Boeing Special                      the proposed AD, to eliminate the need                requirement. However, paragraphs (g)(2)
                                                    Attention Service Bulletin 757–53–                      for a new AMOC as terminating action                  and (g)(3) of this proposed AD do
                                                    0097, Revision 2, dated July 28, 2015.                  for the inspections after replacing the               include findings from paragraph (g) of
                                                    The commenters stated that the                          crown skin panel using a method                       AD 2011–01–15. Paragraph (h) of AD
                                                    compliance information is contained in                  approved in accordance with paragraph                 2011–01–15 states that a repair must be
                                                    detail in the referenced service                        (m) of the proposed AD. UA noted that                 done before further flight if any crack is
                                                    information, and is repeated in the                     Note (c) of Table 1, Note (b) of Table 2,             found. Therefore, for any crack found
                                                    NPRM without benefit of clarification.                  and Note (b) of Table 3 of paragraph                  before the effective date of the final rule,
                                                    The commenters added that the                           1.E., ‘‘Compliance,’’ of Boeing Special               the crack should already have been
                                                    stringers identified for inspection in                  Attention Service Bulletin 757–53–                    repaired. Paragraph (g)(2) of this
                                                    paragraphs (g)(3)(i) and (g)(3)(ii) of the              0097, Revision 2, dated July 28, 2015,                proposed AD states ‘‘. . . or any repair
                                                    proposed AD are incorrect, and should                   stipulate that the skin replacement itself            is installed that covers any portion of
                                                    refer to inspection Zone 3 containing                   is considered terminating action to all               the Zone 1 inspection area . . .’’ and
                                                    stringers S–3L, S–2L, S–1, S–2R, and                    inspections done in accordance with the               that statement covers the crack findings
                                                    S–3R.                                                   referenced service information. UA                    in AD 2011–01–15.
                                                       We partially agree with the                          added that this is based on the fact that                In addition, paragraph (m) of this
                                                    commenters’ request. We agree to revise                 the skin chem-mill process defect                     proposed AD provides credit for Zone 1
jstallworth on DSK7TPTVN1PROD with PROPOSALS




                                                    this proposed AD for clarity but we do                  should not be present in the new skin.                inspections required by paragraph (g)(1)
                                                    not agree to remove all of the details for              UA noted that this method of skin                     of this proposed AD, if those actions
                                                    the required actions in this proposed                   replacement is not part of the safety                 were performed before the effective date
                                                    AD. The stringers identified for                        consideration, and should not require a               of the final rule using Boeing Special
                                                    inspection in paragraphs (g)(3)(i) and                  new AMOC.                                             Attention Service Bulletin 757–53–
                                                    (g)(3)(ii) of the proposed AD are correct,                 We agree with the commenter’s                      0097, dated November 22, 2010;
                                                    as specified in the referenced service                  request. We have clarified paragraph                  Revision 1, dated January 6, 2011; or
                                                    information. However, paragraphs                        (k)(2) of this proposed AD (which was                 Revision 2, dated July 28, 2015. We


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                                                                                Federal Register / Vol. 82, No. 86 / Friday, May 5, 2017 / Proposed Rules                                             21149

                                                    have not changed this proposed AD in                    that we clarify the inspection area in                areas are clearly identified in Boeing
                                                    this regard.                                            paragraphs (g)(3)(i) and (g)(3)(ii) of the            Special Attention Service Bulletin 757–
                                                                                                            proposed AD to include the Zone 3                     53–0097, Revision 2, dated July 28,
                                                    Request To Include Credit for Previous
                                                                                                            areas. Boeing and UA stated that the                  2015, and should be included for
                                                    Inspections
                                                                                                            zones are identified in Boeing Special                clarity.
                                                      Boeing and UA asked that a new                        Attention Service Bulletin 757–53–                      We agree with the commenters’
                                                    paragraph (l)(3) be added to the                        0097, Revision 2, dated July 28, 2015.                request for the reason provided. We
                                                    proposed AD to provide credit for                          We agree with the commenters’                      have clarified paragraphs (g)(3), (g)(3)(i),
                                                    previous inspections done using                         requests for the reason provided. As                  and (g)(3)(ii) of this proposed AD to
                                                    previous revisions of the referenced                    stated previously, this proposed AD                   include doing the Zone 3 inspections as
                                                    service information to accomplish the                   cites Boeing Special Attention Service                specified in Part 6 or Part 7 of Boeing
                                                    inspections in paragraph (g)(1) of this                 Bulletin 757–53–0097, Revision 3, dated               Special Attention Service Bulletin 757–
                                                    AD. Those inspections were approved                     December 2, 2016. We have clarified the               53–0097, Revision 3, dated December 2,
                                                    as an AMOC to AD 2011–01–15.                            inspection language in paragraphs                     2016. The reference to Part 6 and Part
                                                      We do not agree with the commenter’s                  (g)(2)(i) and (g)(2)(ii), and (g)(3)(i) and           7 also applies to the repetitive
                                                    request. It is not necessary to include                 (g)(3)(ii), of this proposed AD to include            inspections.
                                                    credit for inspections that were done                   the Zone 2 and Zone 3 areas,
                                                    using previous revisions of the                         respectively.                                         Request To Clarify Inspection Language
                                                    referenced service information, because                                                                          Boeing asked that we clarify the
                                                    credit for those inspections is already                 Request To Clarify Sections in Service                inspection language in paragraph (j)(1)
                                                                                                            Information With Inspection                           of the proposed AD to better describe
                                                    provided in paragraph (m) of this
                                                                                                            Instructions                                          the inspections required when doing the
                                                    proposed AD. Therefore, we have not
                                                    changed this proposed AD in this                          Boeing asked that we change                         preventative modification. Boeing stated
                                                    regard.                                                 paragraph (g)(1) of the proposed AD to                that it should specify doing high
                                                                                                            clarify that the inspections should be                frequency eddy current open-hole
                                                    Request To Include Credit for                           done using the instructions specified in              inspections for cracking in existing
                                                    Previously Approved Repairs                             Part 1 or Part 2 of Boeing Special                    fastener holes. Boeing noted that Boeing
                                                       UA asked that we include credit                      Attention Service Bulletin 757–53–                    Special Attention Service Bulletin 757–
                                                    language in this proposed AD for                        0097, Revision 2, dated July 28, 2015.                53–0097, Revision 2, dated July 28,
                                                    inspecting previously approved repairs,                 Boeing stated that this clarification                 2015, clearly specifies using an open-
                                                    as specified in Note (a) of Table 1, Note               would avoid confusion.                                hole inspection, and added that if this
                                                    (c) of Table 2, and Note (c) of Table 3                   We agree with the commenter’s                       inspection is not defined it would
                                                    of paragraph 1.E., ‘‘Compliance,’’ of                   request for the reason provided. We                   permit operators to do a surface
                                                    Boeing Special Attention Service                        have clarified paragraphs (g)(1), (g)(1)(i),          inspection around the fasteners, which
                                                    Bulletin 757–53–0097, Revision 2, dated                 and (g)(1)(ii) of this proposed AD to                 is not sufficient to ensure there is no
                                                    July 28, 2015. UA stated that including                 include doing the inspection as                       cracking in the fastener holes.
                                                    this credit would avoid unnecessary                     specified in Part 1 or Part 2 of Boeing                  Boeing also asked that we change the
                                                    work stoppage and minimize future                       Special Attention Service Bulletin 757–               paragraph identifier at the end of
                                                    AMOC requests for repairs which meet                    53–0097, Revision 3, dated December 2,                paragraph (j)(1) of the proposed AD
                                                    these criteria.                                         2016.                                                 from (g) to (g)(1) since the referenced
                                                       We agree that operators are allowed                    Boeing and UA asked that we change                  inspection is actually required by
                                                    credit for inspecting previously                        paragraph (g)(2) of the proposed AD to                paragraph (g)(1) of the proposed AD.
                                                    approved repairs, as specified in the                   clarify that the Zone 2 inspections                   Boeing also asked that we change that
                                                    notes in Tables 1, 2, and 3 of paragraph                should be done using the instructions                 paragraph identifier in paragraphs (l)(1)
                                                    1.E., ‘‘Compliance,’’ of Boeing Special                 specified in Part 4 or Part 5 of Boeing               and (l)(2) of the proposed AD. Boeing
                                                    Attention Service Bulletin 757–53–                      Special Attention Service Bulletin 757–               stated that paragraph (g) of the proposed
                                                    0097, Revision 2, dated July 28, 2015.                  53–0097, Revision 2, dated July 28,                   AD merely refers to the inspection
                                                    However, we do not agree that the                       2015. Boeing stated that those areas are              paragraphs.
                                                    language in those notes should be added                 clearly identified in Boeing Special                     We agree with the commenter’s
                                                    to this proposed AD because Parts 1, 2,                 Attention Service Bulletin 757–53–                    requests for the reasons provided. We
                                                    and 3 of the Work Instructions of Boeing                0097, Revision 2, dated July 28, 2015,                have clarified the inspection language in
                                                    Special Attention Service Bulletin 757–                 and should be included for clarity.                   paragraph (k)(1) of this proposed AD
                                                    53–0097, Revision 3, dated December 2,                    We agree with the commenter’s                       (which was referred to as paragraph
                                                    2016, also include those credit notes.                  request for the reason provided. We                   (j)(1) of the proposed AD (in the NPRM))
                                                    This proposed AD requires                               have clarified paragraphs (g)(2), (g)(2)(i),          to include ‘‘. . . open-hole inspections
                                                    accomplishing the specified actions in                  and (g)(2)(ii) of this proposed AD to                 for cracking in existing fastener holes.’’
                                                    accordance with the Accomplishment                      include doing the Zone 2 inspections as                  We have also changed the paragraph
                                                    Instructions, which includes those notes                specified in Part 4 or Part 5 of Boeing               identifiers in paragraphs (k)(1) and (m)
                                                    in the Work Instructions; therefore,                    Special Attention Service Bulletin 757–               of this proposed AD (which were
                                                    operators are given credit. We have not                 53–0097, Revision 3, dated December 2,                referred to as paragraphs (j)(1), (l)(1),
                                                                                                            2016.                                                 and (l)(2) of the proposed AD (in the
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                                                    changed this proposed AD in this
                                                    regard.                                                   Boeing and UA asked that we change                  NPRM)) to specify paragraph (g)(1) of
                                                                                                            paragraph (g)(3) of the proposed AD to                this proposed AD accordingly.
                                                    Request To Clarify Certain Inspection                   clarify that the Zone 3 inspections
                                                    Areas                                                   should be done using the instructions                 Request To Clarify the Repair Area
                                                       Boeing and UA asked that we clarify                  specified in Part 6 or Part 7 of Boeing                 Boeing asked that we change
                                                    the inspection area in paragraphs                       Special Attention Service Bulletin 757–               paragraphs (g)(2) and (g)(3) of the
                                                    (g)(2)(i) and (g)(2)(ii) of the proposed AD             53–0097, Revision 2, dated July 28,                   proposed AD to clarify that the repair
                                                    to include the Zone 2 areas, and also                   2015. Boeing and UA stated that those                 can cover ‘‘any portion’’ of the Zone 1


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                                                    21150                       Federal Register / Vol. 82, No. 86 / Friday, May 5, 2017 / Proposed Rules

                                                    area, and asked that the description be                 (which was referred to as paragraph                   extend the initial compliance times
                                                    changed to include those words. Boeing                  (j)(1) of the proposed AD (in the NPRM))              specified in AD 2011–01–15 are no
                                                    stated that currently the inspection area               into paragraph (k)(1) of this proposed                longer approved for the compliance
                                                    specified in those paragraphs could be                  AD. We have also removed paragraph                    time extension and instead, the
                                                    interpreted as a repair that would need                 (k)(3) of the proposed AD (in the NPRM)               compliance times required by this
                                                    to cover the entire Zone 1 inspection                   from this proposed AD.                                proposed AD must be complied with.
                                                    area; however, operators typically                                                                            Boeing Alternative Method of
                                                                                                            Request To Clarify Certain AMOC
                                                    install local repairs in areas where                                                                          Compliance Notice 757–53–0097 AMOC
                                                                                                            Language
                                                    cracks are found.                                                                                             03, dated March 28, 2014, extended the
                                                       We agree with the commenter’s                           Two commenters requested that we                   initial compliance times specified in AD
                                                    request for the reason provided. We                     clarify whether existing AMOCs are                    2011–01–15, and as stated previously,
                                                    have clarified paragraphs (g)(2) and                    approved. UA asked that paragraph                     we have received new data that does not
                                                    (g)(3) of this proposed AD to include the               (m)(4) of the proposed AD (in the                     justify the extended compliance times.
                                                    words ‘‘any portion’’ of the Zone 1                     NPRM) be changed to clarify that repairs              We have changed paragraph (n)(4) of
                                                    repair area to be inspected.                            approved previously as AMOCs to AD                    this proposed AD (which was referred to
                                                                                                            2011–01–15 require no further                         as paragraph (m)(4) of the proposed AD
                                                    Request To Clarify the Description of                   evaluation or approval. UA stated that
                                                    the Preventative Modification                                                                                 (in the NPRM)) accordingly.
                                                                                                            operators were required to repair any                    Boeing asked that paragraph (m)(3) of
                                                       Boeing asked that we change                          finding with a repair that included an                the proposed AD (in the NPRM) be
                                                    paragraphs (g)(2) and (g)(3) of the                     AMOC to AD 2011–01–15. UA stated                      changed from ‘‘For a repair method to
                                                    proposed AD to clarify that ‘‘any                       that the current language in paragraph                be approved the repair method,
                                                    preventative modification’’ is actually                 (m)(4) of the proposed AD (in the                     modification deviation, or alteration
                                                    ‘‘the optional Zone 1 preventative                      NPRM) would invalidate all such                       deviation must meet the certification
                                                    modification specified in paragraph                     AMOCs, forcing operators to submit                    basis of the airplane and the approval
                                                    (j)(1) of the NPRM.’’ Boeing stated that                new requests for approval for each                    must specifically refer to this AD’’ to
                                                    there is only one specific preventative                 previously approved repair. In addition,              ‘‘For a repair method, modification
                                                    modification specified in the referenced                UA asked that we include a new                        deviation, or alteration deviation to be
                                                    service information that necessitates the               paragraph (l)(3) to provide credit for                approved the repair method,
                                                    inspections in paragraphs (g)(2) and                    inspections required by paragraph (g)(1)              modification deviation, or alteration
                                                    (g)(3) of the proposed AD.                              of the proposed AD (in the NPRM) that                 deviation must meet the certification
                                                       We agree with the commenter’s                        were approved as an AMOC to AD                        basis of the airplane and the approval
                                                    request for the reason provided. We                     2011–01–15.                                           must specifically refer to this AD.’’
                                                    have clarified paragraphs (g)(2) and                       Boeing asked if paragraph (m)(4) of                Boeing stated that this approval needs to
                                                    (g)(3) of this proposed AD to include the               the proposed AD (in the NPRM) meant                   specify not only for a repair method to
                                                    language provided by the commenter.                     that new AMOCs are needed for all                     be approved, but also for modification
                                                                                                            AMOCs to AD 2011–01–15. Boeing                        and alteration deviations to be
                                                    Request To Clarify Exceptions                           asked that credit be given for                        approved, they must meet type
                                                       Boeing asked that we change                          inspections required by paragraph (g)(1)              certification.
                                                    paragraph (k)(3) of the proposed AD to                  of the proposed AD (in the NPRM) that                    We agree that some clarification is
                                                    clarify that the exception covers                       were approved as an AMOC to AD                        necessary. We have clarified paragraph
                                                    cracking found during any inspection                    2011–01–15 in Boeing Alternative                      (n)(3) of this proposed AD (which was
                                                    required by paragraph (h) or (j)(1) of the              Method of Compliance Notice 757–53–                   referred to as paragraph (m)(3) of the
                                                    proposed AD (in the NPRM). Boeing                       0097–AMOC–01, dated March 28, 2011,                   proposed AD (in the NPRM)) as follows:
                                                    stated repairing any crack found during                 and stated in FAA letter 120S–11–13,                  ‘‘An AMOC that provides an acceptable
                                                    the inspection before installation of the               dated January 19, 2011. Boeing stated                 level of safety may be used for any
                                                    preventative modification in paragraph                  that the AMOC allowed a longer interval               repair, modification, or alteration
                                                    (h) of the proposed AD (in the NPRM)                    for the inspections that are now                      required by this AD if it is approved by
                                                    should also be an exception.                            incorporated in Boeing Special                        the Boeing Commercial Airplanes
                                                       We do not agree with the commenter’s                 Attention Service Bulletin 757–53–                    Organization Designation Authorization
                                                    request. Paragraph (j) of this proposed                 0097, Revision 2, dated July 28, 2015.                (ODA) that has been authorized by the
                                                    AD (which was referred to as paragraph                  Boeing also noted that Boeing                         Manager, Los Angeles ACO, to make
                                                    (i) of the proposed AD (in the NPRM))                   Alternative Method of Compliance                      those findings. To be approved, the
                                                    already specifies repairing any cracking                Notice 757–53–0097 AMOC 03, dated                     repair method, modification deviation,
                                                    found during any inspection required by                 March 28, 2014, should be rescinded                   or alteration deviation must meet the
                                                    paragraph (i) of this proposed AD                       since new data shows that a 15,000 total              certification basis of the airplane, and
                                                    (which was referred to as paragraph (h)                 flight cycle threshold is appropriate                 the approval must specifically refer to
                                                    of the proposed AD (in the NPRM)), as                   instead of 18,000 total flight cycles.                this AD.’’
                                                    well as inspections required by                            We agree that clarification is
                                                    paragraphs (g)(1), (g)(2), and (g)(3) of                necessary. Although paragraph (m)(4) of               Request To Correct Typographical
                                                    this proposed AD. Paragraph (k)(3) of                   the proposed AD (in the NPRM)                         Error
                                                    the proposed AD (in the NPRM) was                       specified that AMOCs approved for AD                     Boeing asked that we change the
jstallworth on DSK7TPTVN1PROD with PROPOSALS




                                                    intended to address cracking found                      2011–01–15, are not approved as                       punctuation following the word
                                                    during the preventative modification                    AMOCs for the corresponding                           ‘‘repair’’ in the first sentence of
                                                    specified in paragraph (j)(1) of the                    provisions of paragraph (g) of the                    paragraph (m)(3) of the proposed AD (in
                                                    proposed AD (in the NPRM). For clarity                  proposed AD (in the NPRM); after                      the NPRM) from a period to a comma.
                                                    in this proposed AD, we have added the                  further review we have determined                     Boeing noted that this is a punctuation
                                                    corrective action for cracking found                    those AMOCs should continue to be                     error.
                                                    during the inspection specified in                      approved, except as of the effective date                We agree with the commenter’s
                                                    paragraph (k)(1) of this proposed AD                    of this proposed AD, AMOCs that                       request and have corrected the


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                                                                                 Federal Register / Vol. 82, No. 86 / Friday, May 5, 2017 / Proposed Rules                                                         21151

                                                    punctuation in paragraph (n)(3) of this                  increased air travel costs in order to get                    period to provide additional
                                                    proposed AD (which was referred to as                    the sense of safety established through                       opportunity for the public to comment
                                                    paragraph (m)(3) of the proposed AD (in                  compliance with this regulation.                              on this SNPRM.
                                                    the NPRM)) accordingly.                                    We acknowledge and appreciate the
                                                                                                             commenter’s concerns. The FAA works                           Proposed Requirements of This SNPRM
                                                    Concerns About Correcting Unsafe                         to ensure that all unsafe conditions are                        This SNPRM would require
                                                    Condition                                                addressed in a timely manner in                               accomplishing the actions specified in
                                                                                                             accordance with FAA risk management                           the service information described
                                                      A commenter, Jonathan Fortune,
                                                                                                             policies that are designed to promote                         previously. For information on the
                                                    stated that it is imperative that any                    aviation safety.
                                                    potentially catastrophic structural issues                                                                             procedures and compliance times, see
                                                    identified in any airplanes be promptly                  FAA’s Determination                                           this service information at http://
                                                    corrected. Mr. Fortune added that repair                                                                               www.regulations.gov by searching for
                                                                                                                We are proposing this AD because we
                                                    costs are greatly outweighed by the                                                                                    and locating Docket No. FAA–2016–
                                                                                                             evaluated all the relevant information
                                                    potential marketing and industry                                                                                       3697.
                                                                                                             and determined the unsafe condition
                                                    disaster that would occur if these                       described previously is likely to exist or                    Costs of Compliance
                                                    airplanes crashed. Mr. Fortune noted                     develop in other products of the same
                                                    that Boeing should not be able to                        type design. Certain changes described                           We estimate that this proposed AD
                                                    operate these airplanes without                          above expand the scope of the NPRM.                           affects 652 airplanes of U.S. registry.
                                                    addressing these issues. Mr. Fortune                     As a result, we have determined that it                          We estimate the following costs to
                                                    stated that he is willing to pay for                     is necessary to reopen the comment                            comply with this proposed AD:

                                                                                                                          ESTIMATED COSTS
                                                                                                                                                                               Cost per                 Cost on U.S.
                                                             Action                                 Labor cost                               Parts cost                        product                   operators

                                                    Inspections (Zone 1)        2 work-hour × $85 per hour = $170 per in-             $0 ..........................   $170 per inspection         $110,840 per inspection
                                                      [Retained actions           spection cycle.                                                                       cycle.                      cycle.
                                                      from AD 2011–01–
                                                      15].
                                                    Inspections (Zones 2        Up to 4 work-hours × $85 per hour = Up to             $0 ..........................   Up to $340 per in-          Up to $221,680 per in-
                                                      and 3) [new pro-            $340 per inspection cycle.                                                            spection cycle.             spection cycle.
                                                      posed action].
                                                    Optional modification       Up to 615 work-hours × $85 per hour = Up              Up to $26,496 .......           Up to $78,771 ...........   Up to $51,358,692.
                                                                                 to $52,275.



                                                      We have received no definitive data                    products identified in this rulemaking                        List of Subjects in 14 CFR Part 39
                                                    that would enable us to provide a cost                   action.
                                                    estimate for the on-condition actions                                                                                    Air transportation, Aircraft, Aviation
                                                    specified in this proposed AD.                           Regulatory Findings                                           safety, Incorporation by reference,
                                                                                                                                                                           Safety.
                                                      We have received no definitive data                      We determined that this proposed AD
                                                    that would enable us to provide a cost                   would not have federalism implications                        The Proposed Amendment
                                                    estimate for the optional replacement                    under Executive Order 13132. This
                                                    specified in this proposed AD.                                                                                           Accordingly, under the authority
                                                                                                             proposed AD would not have a
                                                                                                                                                                           delegated to me by the Administrator,
                                                    Authority for This Rulemaking                            substantial direct effect on the States, on
                                                                                                                                                                           the FAA proposes to amend 14 CFR part
                                                                                                             the relationship between the national                         39 as follows:
                                                       Title 49 of the United States Code                    Government and the States, or on the
                                                    specifies the FAA’s authority to issue                   distribution of power and                                     PART 39—AIRWORTHINESS
                                                    rules on aviation safety. Subtitle I,                    responsibilities among the various                            DIRECTIVES
                                                    section 106, describes the authority of                  levels of government.
                                                    the FAA Administrator. ‘‘Subtitle VII:                     For the reasons discussed above, I                          ■ 1. The authority citation for part 39
                                                    Aviation Programs’’ describes in more                                                                                  continues to read as follows:
                                                                                                             certify this proposed regulation:
                                                    detail the scope of the Agency’s
                                                                                                               (1) Is not a ‘‘significant regulatory                           Authority: 49 U.S.C. 106(g), 40113, 44701.
                                                    authority.
                                                                                                             action’’ under Executive Order 12866,                         § 39.13    [Amended]
                                                       We are issuing this rulemaking under
                                                    the authority described in Subtitle VII,                   (2) Is not a ‘‘significant rule’’ under
                                                                                                                                                                           ■ 2. The FAA amends § 39.13 by
                                                    Part A, Subpart III, Section 44701:                      the DOT Regulatory Policies and
                                                                                                                                                                           removing Airworthiness Directive (AD)
                                                    ‘‘General requirements.’’ Under that                     Procedures (44 FR 11034, February 26,
                                                                                                                                                                           2011–01–15, Amendment 39–16572 (76
                                                    section, Congress charges the FAA with                   1979),
jstallworth on DSK7TPTVN1PROD with PROPOSALS




                                                                                                                                                                           FR 1351, January 10, 2011), and adding
                                                    promoting safe flight of civil aircraft in                 (3) Will not affect intrastate aviation                     the following new AD.
                                                    air commerce by prescribing regulations                  in Alaska, and
                                                    for practices, methods, and procedures                                                                                 The Boeing Company: Docket No. FAA–
                                                    the Administrator finds necessary for                      (4) Will not have a significant                                 2016–3697; Directorate Identifier 2015–
                                                                                                             economic impact, positive or negative,                            NM–143–AD.
                                                    safety in air commerce. This regulation
                                                    is within the scope of that authority                    on a substantial number of small entities                     (a) Comments Due Date
                                                    because it addresses an unsafe condition                 under the criteria of the Regulatory                            We must receive comments by June 19,
                                                    that is likely to exist or develop on                    Flexibility Act.                                              2017.



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                                                    21152                       Federal Register / Vol. 82, No. 86 / Friday, May 5, 2017 / Proposed Rules

                                                    (b) Affected ADs                                        Part 2 of the Accomplishment Instructions of          757–53–0097, Revision 3, dated December 2,
                                                      This AD replaces AD 2011–01–15,                       Boeing Special Attention Service Bulletin             2016.
                                                    Amendment 39–16572 (76 FR 1351, January                 757–53–0097, Revision 3, dated December 2,               (ii) Do an external spot-probe-medium-
                                                    10, 2011) (‘‘AD 2011–01–15’’).                          2016.                                                 frequency EC inspection for cracking of the
                                                                                                               (2) For airplanes on which any crack is            crown skin panel in the applicable Zone 3
                                                    (c) Applicability                                       found during any inspection required by               areas, specified in, and in accordance with,
                                                       (1) This AD applies to The Boeing                    paragraph (g)(1) of this AD; or any repair is         Part 7 of the Accomplishment Instructions of
                                                    Company Model 757–200 and –300 series                   installed that covers any portion of the Zone         Boeing Special Attention Service Bulletin
                                                    airplanes, certificated in any category, as             1 inspection area specified in Boeing Special         757–53–0097, Revision 3, dated December 2,
                                                    identified in Boeing Special Attention                  Attention Service Bulletin 757–53–0097,               2016.
                                                    Service Bulletin 757–53–0097, Revision 3,               Revision 3, dated December 2, 2016; or the
                                                    dated December 2, 2016.                                 optional Zone 1 preventative modification             (h) Initial Compliance Time for Inspection
                                                       (2) Installation of Supplemental Type                specified in paragraph (k)(1) of this AD is           Required by Paragraph (g)(1) of This AD
                                                    Certificate (STC) ST01518SE (http://                    installed: At the applicable time specified in           Within the applicable compliance times
                                                    rgl.faa.gov/Regulatory_and_Guidance_                    table 2 of paragraph 1.E., ‘‘Compliance,’’ of
                                                                                                                                                                  specified in paragraphs (h)(1), (h)(2), (h)(3),
                                                    Library/rgSTC.nsf/0/                                    Boeing Special Attention Service Bulletin
                                                                                                                                                                  and (h)(4) of this AD, whichever occurs
                                                    38B606833BBD98B386257FAA00602538?                       757–53–0097, Revision 3, dated December 2,
                                                                                                                                                                  latest: Do the initial inspection required by
                                                    OpenDocument&Highlight=st01518se) does                  2016, except as required by paragraph (l)(1)
                                                                                                            of this AD: Do the Zone 2 inspection                  paragraph (g)(1) of this AD.
                                                    not affect the ability to accomplish the                                                                         (1) For all airplanes: Before the
                                                    actions required by this AD. Therefore, for             specified in paragraph (g)(2)(i) or (g)(2)(ii) of
                                                                                                            this AD. Repeat the applicable Part 4 or Part         accumulation of 15,000 total flight cycles.
                                                    airplanes on which STC ST01518SE is                                                                              (2) For airplanes on which an external
                                                                                                            5 inspection thereafter at the applicable times
                                                    installed, a ‘‘change in product’’ alternative                                                                sliding probe EC inspection for Zone 1, as
                                                                                                            specified in table 2 of paragraph 1.E.,
                                                    method of compliance (AMOC) approval                                                                          specified in Boeing Special Attention Service
                                                                                                            ‘‘Compliance,’’ of Boeing Special Attention
                                                    request is not necessary to comply with the                                                                   Bulletin 757–53–0097, has been done as of
                                                                                                            Service Bulletin 757–53–0097, Revision 3,
                                                    requirements of 14 CFR 39.17.                                                                                 the effective date of this AD: Within 620
                                                                                                            dated December 2, 2016. Accomplishing the
                                                    (d) Subject                                             replacement specified in paragraph (k)(2) of          flight cycles after accomplishing the most
                                                      Air Transport Association (ATA) of                    this AD terminates the inspections required           recent external sliding probe EC inspection
                                                    America Code 53, Fuselage.                              by this paragraph.                                    for Zone 1.
                                                                                                               (i) Do an external sliding probe EC                   (3) For airplanes on which an external
                                                    (e) Unsafe Condition                                    inspection for cracking of the crown skin             spot-probe-medium-frequency EC inspection
                                                       This AD was prompted by reports of the               panel in the applicable Zone 2 areas                  for Zone 1, as specified in Boeing Special
                                                    initiation of fatigue cracking in the fuselage          specified in, and in accordance with, Part 4          Attention Service Bulletin 757–53–0097, has
                                                    skin of the crown skin panel along locally              of the Accomplishment Instructions of                 been done as of the effective date of this AD:
                                                    thinned channels adjacent to the chem-                  Boeing Special Attention Service Bulletin             Within 200 flight cycles after accomplishing
                                                    milled steps. We are issuing this AD to detect          757–53–0097, Revision 3, dated December 2,            the most recent external spot-probe-medium-
                                                    and correct fatigue cracking of the fuselage            2016.                                                 frequency EC inspection for Zone 1.
                                                    skin of the crown skin panel, which could                  (ii) Do an external spot-probe-medium-                (4) For all airplanes: Within 200 flight
                                                    result in pressure venting and consequent               frequency EC inspection for cracking of the           cycles or 90 days after the effective date of
                                                    rapid decompression of the airplane.                    crown skin panel in the applicable Zone 2             this AD, whichever occurs first.
                                                                                                            areas specified in, and in accordance with,
                                                    (f) Compliance                                          Part 5 of the Accomplishment Instructions of          (i) Post-Preventive Modification
                                                       Comply with this AD within the                       Boeing Special Attention Service Bulletin             Supplemental Inspections
                                                    compliance times specified, unless already              757–53–0097, Revision 3, dated December 2,               For airplanes on which a preventive
                                                    done.                                                   2016.                                                 modification has been installed as specified
                                                                                                               (3) For airplanes on which any crack is            in Part 3 of the Accomplishment Instructions
                                                    (g) Repetitive Inspections                              found during any inspection required by               of Boeing Special Attention Service Bulletin
                                                       Do the applicable inspections required by            paragraph (g)(1) of this AD; or any repair is         757–53–0097, Revision 3, dated December 2,
                                                    paragraphs (g)(1), (g)(2), and (g)(3) of this AD.       installed that covers any portion of the Zone
                                                                                                                                                                  2016: At the applicable time specified in
                                                       (1) For all airplanes: Within the                    1 inspection area specified in Boeing Special
                                                                                                                                                                  table 4 of paragraph 1.E., ‘‘Compliance,’’ of
                                                    compliance time specified in paragraph (h) of           Attention Service Bulletin 757–53–0097,
                                                                                                                                                                  Boeing Special Attention Service Bulletin
                                                    this AD, do the Zone 1 inspection specified             Revision 3, dated December 2, 2016; or the
                                                                                                                                                                  757–53–0097, Revision 3, dated December 2,
                                                    in paragraph (g)(1)(i) or (g)(1)(ii) of this AD.        optional Zone 1 preventative modification
                                                    Repeat the applicable Part 1 or Part 2                  specified in paragraph (k)(1) of this AD is           2016; do eddy current and detailed
                                                    inspection thereafter at the applicable times           installed: At the applicable time specified in        inspections for cracking of the applicable
                                                    specified in table 1 of paragraph 1.E.,                 table 3 of paragraph 1.E., ‘‘Compliance,’’ of         areas of the fuselage skin of the doublers,
                                                    ‘‘Compliance,’’ of Boeing Special Attention             Boeing Special Attention Service Bulletin             triplers, and fillers of the preventive
                                                    Service Bulletin 757–53–0097, Revision 3,               757–53–0097, Revision 3, dated December 2,            modification, in accordance with the
                                                    dated December 2, 2016. Accomplishing the               2016, except as required by paragraph (l)(1)          Accomplishment Instructions of Boeing
                                                    preventative modification specified in                  of this AD, do the Zone 3 inspection                  Special Attention Service Bulletin 757–53–
                                                    paragraph (k)(1) of this AD or the                      specified in paragraph (g)(3)(i) or (g)(3)(ii) of     0097, Revision 3, dated December 2, 2016.
                                                    replacement specified in paragraph (k)(2) of            this AD. Repeat the applicable Part 6 or Part         Repeat the inspection thereafter at the
                                                    this AD terminates the inspections required             7 inspection thereafter at the applicable times       applicable times specified in table 4 of
                                                    by this paragraph.                                      specified in table 3 of paragraph 1.E.,               paragraph 1.E., ‘‘Compliance,’’ of Boeing
                                                       (i) Do an external sliding probe eddy                ‘‘Compliance,’’ of Boeing Special Attention           Special Attention Service Bulletin 757–53–
                                                    current (EC) inspection for cracking of the             Service Bulletin 757–53–0097, Revision 3,             0097, Revision 3, dated December 2, 2016.
                                                    crown skin panel in the applicable Zone 1               dated December 2, 2016. Accomplishing the
jstallworth on DSK7TPTVN1PROD with PROPOSALS




                                                                                                                                                                  (j) Repair
                                                    areas specified in, and in accordance with,             replacement specified in paragraph (k)(2) of
                                                    Part 1 of the Accomplishment Instructions of            this AD terminates the inspections required              If any cracking is found during any
                                                    Boeing Special Attention Service Bulletin               by this paragraph.                                    inspection required by paragraph (g)(1),
                                                    757–53–0097, Revision 3, dated December 2,                 (i) Do an external sliding probe EC                (g)(2), (g)(3), or (i) of this AD, repair before
                                                    2016.                                                   inspection for cracking of the crown skin             further flight using a method approved in
                                                       (ii) Do an external spot-probe-medium-               panel in the applicable Zone 3 areas                  accordance with the procedures specified in
                                                    frequency EC inspection for cracking of the             specified in, and in accordance with, Part 6          paragraph (n) of this AD. Doing the repair
                                                    crown skin panel in the applicable Zone 1               of the Accomplishment Instructions of                 ends the repetitive inspections for the
                                                    areas specified in, and in accordance with              Boeing Special Attention Service Bulletin             repaired area only.



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                                                                                Federal Register / Vol. 82, No. 86 / Friday, May 5, 2017 / Proposed Rules                                           21153

                                                    (k) Optional Terminating Actions                        be emailed to: 9-ANM-LAACO-AMOC-                      DEPARTMENT OF HOMELAND
                                                       (1) Accomplishing the preventative                   Requests@faa.gov.                                     SECURITY
                                                    modification, including doing high frequency               (2) Before using any approved AMOC,
                                                    EC open-hole inspections for cracking in the            notify your appropriate principal inspector,          Coast Guard
                                                    existing fastener holes, in accordance with             or lacking a principal inspector, the manager
                                                    Part 3 of the Accomplishment Instructions of            of the local flight standards district office/
                                                                                                            certificate holding district office.
                                                                                                                                                                  33 CFR Part 165
                                                    Boeing Special Attention Service Bulletin
                                                    757–53–0097, Revision 3, dated December 2,                 (3) An AMOC that provides an acceptable            [Docket Number USCG–2017–0357]
                                                    2016, except as required by paragraph (l)(2)            level of safety may be used for any repair,
                                                                                                            modification, or alteration required by this          RIN 1625–AA00
                                                    of this AD, terminates the inspections
                                                    required by paragraph (g)(1) of this AD,                AD if it is approved by the Boeing
                                                    provided the preventative modification is               Commercial Airplanes Organization                     Safety Zone; Potomac River, Newburg,
                                                    done before further flight after accomplishing          Designation Authorization (ODA) that has              MD
                                                    an inspection required by paragraph (g)(1) of           been authorized by the Manager, Los Angeles           AGENCY:   Coast Guard, DHS.
                                                    this AD. If any cracking is found during any            ACO, to make those findings. To be
                                                    high frequency EC open-hole inspection,                 approved, the repair method, modification             ACTION:   Notice of proposed rulemaking.
                                                    before further flight, repair using a method            deviation, or alteration deviation must meet
                                                    approved in accordance with the procedures
                                                                                                                                                                   The Coast Guard proposes to
                                                                                                                                                                  SUMMARY:
                                                                                                            the certification basis of the airplane, and the
                                                    specified in paragraph (n) of this AD.                  approval must specifically refer to this AD.establish a temporary safety zone for
                                                       (2) Replacing the crown skin panel                      (4) AMOCs approved for AD 2011–01–15     certain waters of the Potomac River.
                                                    between station (STA) 297 and STA 439, and              are approved as AMOCs for the               This action is necessary to provide for
                                                    stringers S–4L and S–4R, in accordance with             corresponding provisions of paragraph (g) ofthe safety of life on navigable waters
                                                    the Accomplishment Instructions of Boeing                                                           during a fireworks display in Charles
                                                                                                            this AD; except, as of the effective date of this
                                                    Special Attention Service Bulletin 757–53–              AD, AMOCs that extend the initial           County near Newburg, MD, on June 17,
                                                    0097, Revision 3, dated December 2, 2016, or            compliance times specified in AD 2011–01–   2017. This proposed rulemaking would
                                                    using a method approved in accordance with              15 are no longer approved for the complianceprohibit persons and vessels from
                                                    the procedures specified in paragraph (n) of            time extension and the compliance times
                                                    this AD, terminates the inspections required                                                        entering the safety zone unless
                                                                                                            required by this AD must be complied with.
                                                    by paragraphs (g)(1), (g)(2), and (g)(3) of this                                                    authorized by the Captain of the Port
                                                                                                               (5) For service information that contains
                                                    AD.                                                     steps that are labeled as Required for      Maryland-National Capital Region or a
                                                                                                            Compliance (RC), the provisions of          designated representative. We invite
                                                    (l) Exceptions to Service Information
                                                                                                            paragraphs (n)(5)(i) and (n)(5)(ii) apply.  your comments on this proposed
                                                    Specifications and Preventative Modification
                                                                                                               (i) The steps labeled as RC, including   rulemaking.
                                                       (1) Where Boeing Special Attention Service           substeps under an RC step and any figures
                                                    Bulletin 757–53–0097, Revision 3, dated                                                             DATES: Comments and related material
                                                                                                            identified in an RC step, must be done to
                                                    December 2, 2016, specifies a compliance                                                            must be received by the Coast Guard on
                                                                                                            comply with the AD. An AMOC is required
                                                    time ‘‘after the Revision 2 date of this service        for any deviations to RC steps, including   or before June 5, 2017.
                                                    bulletin,’’ or ‘‘after the Revision 3 date of this      substeps and identified figures.            ADDRESSES: You may submit comments
                                                    service bulletin,’’ this AD requires                       (ii) Steps not labeled as RC may be      identified by docket number USCG–
                                                    compliance within the specified compliance              deviated from using accepted methods in     2017–0357 using the Federal
                                                    time after the effective date of this AD.               accordance with the operator’s maintenance
                                                       (2) Where Boeing Special Attention Service
                                                                                                                                                        eRulemaking Portal at http://
                                                                                                            or inspection program without obtaining     www.regulations.gov. See the ‘‘Public
                                                    Bulletin 757–53–0097, Revision 3, dated
                                                                                                            approval of an AMOC, provided the RC steps, Participation and Request for
                                                    December 2, 2016, specifies to contact Boeing
                                                                                                            including substeps and identified figures, can
                                                                                                                                                        Comments’’ portion of the
                                                    for repair instructions: Before further flight,
                                                                                                            still be done as specified, and the airplane
                                                    repair using a method approved in                                                                   SUPPLEMENTARY INFORMATION section for
                                                                                                            can be put back in an airworthy condition.
                                                    accordance with the procedures specified in                                                         further instructions on submitting
                                                    paragraph (n) of this AD.                               (o) Related Information                     comments.
                                                    (m) Credit for Previous Actions                           (1) For more information about this AD,   FOR FURTHER INFORMATION CONTACT: If
                                                                                                            contact Eric Schrieber, Aerospace Engineer, you have questions about this proposed
                                                      This paragraph provides credit for Zone 1
                                                                                                            Airframe Branch, ANM–120L, FAA, Los
                                                    inspections required by paragraph (g)(1) of                                                         rulemaking, call or email Mr. Ronald
                                                                                                            Angeles ACO, 3960 Paramount Boulevard,
                                                    this AD, if those actions were performed
                                                                                                            Lakewood, CA 90712–4137; phone: 562–627– Houck, Sector Maryland-National
                                                    before the effective date of this AD using                                                          Capital Region Waterways Management
                                                                                                            5348; fax: 562–627–5210; email:
                                                    Boeing Special Attention Service Bulletin                                                           Division, U.S. Coast Guard; telephone
                                                                                                            Eric.Schrieber@faa.gov.
                                                    757–53–0097, dated November 22, 2010
                                                                                                              (2) For service information identified in 410–576–2674, email Ronald.L.Houck@
                                                    (which was incorporated by reference in AD
                                                    2011–01–15); Boeing Special Attention
                                                                                                            this AD, contact Boeing Commercial          uscg.mil.
                                                                                                            Airplanes, Attention: Contractual & Data
                                                    Service Bulletin 757–53–0097, Revision 1,                                                           SUPPLEMENTARY INFORMATION:
                                                                                                            Services (C&DS), 2600 Westminster Blvd.,
                                                    dated January 6, 2011; or Boeing Special
                                                                                                            MC 110–SK57, Seal Beach, CA 90740;                    I. Table of Abbreviations
                                                    Attention Service Bulletin 757–53–0097,
                                                                                                            telephone 562–797–1717; Internet https://
                                                    Revision 2, dated July 28, 2015.                                                                              CFR Code of Federal Regulations
                                                                                                            www.myboeingfleet.com. You may view this
                                                    (n) Alternative Methods of Compliance                   referenced service information at the FAA,            COTP Captain of the Port
                                                    (AMOCs)                                                 Transport Airplane Directorate, 1601 Lind             DHS Department of Homeland Security
                                                                                                            Avenue SW., Renton, WA. For information               FR Federal Register
                                                       (1) The Manager, Los Angeles Aircraft                                                                      NPRM Notice of proposed rulemaking
                                                    Certification Office (ACO), FAA, has the                on the availability of this material at the
jstallworth on DSK7TPTVN1PROD with PROPOSALS




                                                                                                            FAA, call 425–227–1221.                               § Section
                                                    authority to approve AMOCs for this AD, if                                                                    U.S.C. United States Code
                                                    requested using the procedures found in 14                Issued in Renton, Washington, on April 7,
                                                    CFR 39.19. In accordance with 14 CFR 39.19,             2017.                                                 II. Background, Purpose, and Legal
                                                    send your request to your principal inspector           Michael Kaszycki,                                     Basis
                                                    or local Flight Standards District Office, as
                                                                                                            Acting Manager, Transport Airplane                       On April 11, 2017, Gilligan’s Pier of
                                                    appropriate. If sending information directly
                                                                                                            Directorate, Aircraft Certification Service.          Newburg, MD, notified the Coast Guard
                                                    to the manager of the ACO, send it to the
                                                    attention of the person identified in                   [FR Doc. 2017–07938 Filed 5–4–17; 8:45 am]            that it will be conducting a short-
                                                    paragraph (o)(1) of this AD. Information may            BILLING CODE 4910–13–P                                duration aerial fireworks display at 9


                                               VerDate Sep<11>2014   14:02 May 04, 2017   Jkt 241001   PO 00000   Frm 00012   Fmt 4702   Sfmt 4702   E:\FR\FM\05MYP1.SGM   05MYP1



Document Created: 2018-11-08 08:39:37
Document Modified: 2018-11-08 08:39:37
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionSupplemental notice of proposed rulemaking (SNPRM); reopening of comment period.
DatesWe must receive comments on this SNPRM by June 19, 2017.
ContactEric Schrieber, Aerospace Engineer, Airframe Branch, ANM-120L, FAA, Los Angeles Aircraft Certification Office (ACO), 3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 562-627-5348; fax: 562-627-5210; email: [email protected]
FR Citation82 FR 21146 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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