83_FR_1538 83 FR 1529 - Airworthiness Directives; The Boeing Company Airplanes

83 FR 1529 - Airworthiness Directives; The Boeing Company Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 9 (January 12, 2018)

Page Range1529-1532
FR Document2018-00256

We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by reports of fatigue cracking in the frame outboard chord and in the radius of the auxiliary chord at a certain area. This AD requires inspections to detect this cracking, and corrective action if necessary. We are issuing this AD to address the unsafe condition on these products.

Federal Register, Volume 83 Issue 9 (Friday, January 12, 2018)
[Federal Register Volume 83, Number 9 (Friday, January 12, 2018)]
[Rules and Regulations]
[Pages 1529-1532]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-00256]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0629; Product Identifier 2016-NM-184-AD; Amendment 
39-19149; AD 2018-01-08]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: We are adopting a new airworthiness directive (AD) for all The 
Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series 
airplanes. This AD was prompted by reports of fatigue cracking in the 
frame outboard chord and in the radius of the auxiliary chord at a 
certain area. This AD requires inspections to detect this cracking, and 
corrective action if necessary. We are issuing this AD to address the 
unsafe condition on these products.

DATES: This AD is effective February 16, 2018 .
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of December 26, 
2012 (77 FR 69747, November 21, 2012).

ADDRESSES: For service information identified in this final rule, 
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 service information at the FAA, Transport Standards 
Branch, 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-2017-0629.

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-2017-
0629; 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 final rule, the regulatory evaluation, any comments 
received, and other information. The address for the Docket Office 
(phone: 800-647-5527) is Docket Management Facility, U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: George Garrido, Aerospace Engineer, 
Airframe Section, FAA, Los Angeles ACO Branch, 3960 Paramount 
Boulevard, Lakewood, CA 90712-4137; phone: 562-627-5232; fax: 562-627-
5210; email: george.garrido@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 by adding an AD that would apply to all The Boeing Company 
Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. The 
NPRM published in the Federal Register on June 30, 2017 (82 FR 29792). 
The NPRM was prompted by reports of fatigue cracking in the frame 
outboard chord and in the radius of the auxiliary chord at a certain 
area. The NPRM proposed to require inspections to detect this cracking, 
and corrective action if necessary. We are issuing this AD to detect 
and correct fatigue cracking of the outboard and auxiliary chords, 
which could result in reduced structural integrity of the outboard 
chord and consequent rapid decompression of the airplane.

Comments

    We gave the public the opportunity to participate in developing 
this final rule. The following presents the comments

[[Page 1530]]

received on the NPRM and the FAA's response to each comment.

Effect of Winglets on Accomplishment of the Proposed Actions

    Aviation Partners Boeing stated that accomplishing Supplemental 
Type Certificate (STC) ST01219SE does not affect the ability to 
accomplish the actions specified in the NPRM.
    We agree with the commenter. We have redesignated paragraph (c) of 
the proposed AD as (c)(1) and added paragraph (c)(2) to this AD to 
state that installation of STC ST01219SE does not affect the ability to 
accomplish the actions required by this AD. Therefore, for airplanes on 
which STC ST01219SE is installed, a ``change in product'' alternative 
methods of compliance (AMOC) approval request is not necessary to 
comply with the requirements of 14 CFR 39.17.

Request To Remove Certain Language in Paragraph (i) of the Proposed AD

    Boeing asked that the language ``and repair'' be removed from 
paragraph (i) of the proposed AD. Boeing stated that the language in 
paragraph (i) refers to a section in Part 6 of Boeing Alert Service 
Bulletin 737-53A1166, Revision 2, dated May 25, 2006, which is to 
determine if the modification should be classified as interim or 
permanent. Boeing noted that the additional language ``and repair'' is 
not part of that section, and suggested it be deleted.
    We agree with the commenter's request for the reason provided. We 
have deleted ``and repair'' from paragraph (i) of this AD.

Request To Clarify Certain Language

    Swiftair S.A. stated that the language describing the requirements 
in paragraph (h) of the proposed AD is confusing. Swiftair asked that 
the effectivity and the requirements identified in paragraph (h) of the 
proposed AD be clarified in some way due to extensive sub-paragraphs. 
Swiftair recommended that the ``and'' in the sentence be emphasized.
    We acknowledge the commenter's concern. However, we cannot 
emphasize or highlight specific text in an AD. The affected airplanes 
in paragraph (h) of the AD are those that meet all of the criteria 
specified in the sub-paragraphs. We have not changed this AD in this 
regard.
    Swiftair S.A. also stated that the language describing the 
requirements in paragraph (j) of the proposed AD is confusing. Swiftair 
added that the pre-regulatory text in the NPRM refers to actions from 
AD 2012-23-04, Amendment 39-17260 (77 FR 69747, November 21, 2012) 
(``AD 2012-23-04'') and the combination of that rulemaking and the 
actions in the proposed AD is confusing. Swiftair also stated that 
paragraph (r) of AD 2012-23-04 should be explained in the current 
requirements and not in the pre-regulatory text.
    We agree that some clarification is necessary. Concerning the 
request to include the current requirements of AD 2012-23-04 in this 
AD, we would have had to issue different rulemaking. Instead of a 
stand-alone AD, the alternative would have been to supersede AD 2012-
23-04, which would have resulted in a single but considerably more 
complex AD. All operators identified in AD 2012-23-04 would then have 
to show compliance with the new supersedure AD. Our experience with 
similar complex ADs, and with operator feedback, is that it is 
preferable to leave the existing AD as is and issue a related but 
stand-alone AD such as this one.
    To clarify the criteria in paragraph (h)(3) of this AD, we have 
added Note 1 to paragraph (h)(3) of this AD to reference the optional 
terminating action specified in paragraph (r) of AD 2012-23-04.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
this final rule with the changes described previously and minor 
editorial changes. We have determined that these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM for correcting the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of this final 
rule.

Related Service Information Under 1 CFR Part 51

    We reviewed Boeing Alert Service Bulletin 737-53A1166, Revision 2, 
dated May 25, 2006. The service information describes procedures for 
inspections for cracks of the body station (BS) 727 frame outboard 
chord and in the radius of the auxiliary chord, and repair or 
replacement if necessary. 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.

Costs of Compliance

    We estimate that this AD affects 160 airplanes of U.S. registry. We 
estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                           Affected
            Action                    Labor cost         airplanes of      Cost per      Cost on  U.S. operators
                                                         U.S. registry      product
----------------------------------------------------------------------------------------------------------------
Detailed and High Frequency     6 work-hours x $85 per               5            $510  $2,550 per inspection
 Eddy Current (HFEC)             hour = $510 per                                         cycle.
 inspections.                    inspection cycle.
One-time follow-on HFEC         9 work-hours x $85 per               5             765  $3,825.
 inspection.                     hour = $765.
HFEC inspection...............  9 work-hours x $85 per             150             765  $114,750.
                                 hour = $765.
----------------------------------------------------------------------------------------------------------------

    We estimate the following costs to do any necessary repairs that 
are required based on the results of the inspections. We have no way of 
determining the number of aircraft that might need these repairs:

[[Page 1531]]



                                               On-Condition Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                     Cost per
                   Action                                 Labor cost                Parts cost        product
----------------------------------------------------------------------------------------------------------------
Repair of cracking of the outboard chord     514 work-hours x $85 per hour =             $13,586        $57,276.
 frame.                                       $43,690.
Repair of cracking of the outboard chord...  49 work-hours x $85 per hour =                4,255          8,420.
                                              $4,165.
----------------------------------------------------------------------------------------------------------------

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.
    This AD is issued in accordance with authority delegated by the 
Executive Director, Aircraft Certification Service, as authorized by 
FAA Order 8000.51C. In accordance with that order, issuance of ADs is 
normally a function of the Compliance and Airworthiness Division, but 
during this transition period, the Executive Director has delegated the 
authority to issue ADs applicable to transport category airplanes to 
the Director of the System Oversight Division.

Regulatory Findings

    This AD will not have federalism implications under Executive Order 
13132. This AD will 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 that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under 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.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 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 adding the following new airworthiness 
directive (AD):

2018-01-08 The Boeing Company: Amendment 39-19149; Docket No. FAA-
2017-0629; Product Identifier 2016-NM-184-AD.

(a) Effective Date

    This AD is effective February 16, 2018.

(b) Affected ADs

    None.

(c) Applicability

    (1) This AD applies to all The Boeing Company Model 737-100, -
200, -200C, -300, -400, and -500 series airplanes, certificated in 
any category.
    (2) Installation of Supplemental Type Certificate (STC) 
ST01219SE (http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/EBD1CEC7B301293E86257CB30045557A?OpenDocument&Highlight=st01219se) 
does not affect the ability to accomplish the actions required by 
this AD. Therefore, for airplanes on which STC ST01219SE 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 fatigue cracking in the frame 
outboard chord and in the radius of the auxiliary chord at body 
station (BS) 727 and stringer (S) 18A. We are issuing this AD to 
detect and correct fatigue cracking of the outboard and auxiliary 
chords, which could result in reduced structural integrity of the 
outboard chord and consequent rapid decompression of the airplane.

(f) Compliance

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

(g) Repetitive Inspections and Corrective Action

    For airplanes identified in paragraph (h) of this AD: Within 
4,500 flight cycles or 24 months after the effective date of this 
AD, whichever occurs first, do internal detailed and High Frequency 
Eddy Current (HFEC) inspections to detect cracks in the auxiliary 
chord radius, in accordance with Part 1 of the Accomplishment 
Instructions of Boeing Alert Service Bulletin 737-53A1166, Revision 
2, dated May 25, 2006. If any crack is found during any inspection 
required by this paragraph, before further flight, repair using a 
method approved in accordance with the procedures specified in 
paragraph (l) of this AD. Repeat the inspections thereafter at 
intervals not to exceed 15,000 flight cycles. Replacement of the 
outboard chord of the frame at BS 727 concurrently with the 
installation of the preventive modification of the outboard chord in 
accordance with Part 6 of the Accomplishment Instructions of Boeing 
Alert Service Bulletin 737-53A1166, Revision 2, dated May 25, 2006, 
terminates the repetitive inspections required by this paragraph.

(h) Airplanes for Actions Specified in Paragraph (g) of This AD

    The actions specified in paragraph (g) of this AD are required 
for airplanes that meet the criteria of paragraphs (h)(1), (h)(2), 
(h)(3), and (h)(4) of this AD.
    (1) Model 737-100, -200, and -200C series airplanes, line 
numbers 1 through 999 inclusive.
    (2) Airplanes identified as Groups 1, 2, and 3 in Boeing Alert 
Service Bulletin 737-53A1166, Revision 2, dated May 25, 2006.
    (3) Airplanes on which a preventive modification has been 
installed in accordance with the method specified in paragraph 
(h)(3)(i), (h)(3)(ii), or (h)(3)(iii) of this AD.
    Note 1 to paragraph (h)(3) of this AD: The modification 
identified in paragraph (h)(3) of this AD is also specified in 
paragraph (r) of AD 2012-23-04, Amendment 39-17260 (77 FR 69747, 
November 21, 2012), as optional terminating action.
    (i) Part 6 of the Accomplishment Instructions of Boeing Alert 
Service Bulletin 737-53A1166, Revision 2, dated May 25, 2006.

[[Page 1532]]

    (ii) Part II of the Accomplishment Instructions of Boeing Alert 
Service Bulletin 737-53A1166, Revision 1, dated May 25, 1995.
    (iii) Part II of the Accomplishment Instructions of Boeing Alert 
Service Bulletin 737-53A1166, dated June 30, 1994.
    (4) Airplanes on which the outboard chord has not been replaced 
in accordance with the method specified in paragraph (h)(4)(i), 
(h)(4)(ii), or (h)(4)(iii) of this AD.
    (i) Part 3 of the Accomplishment Instructions of Boeing Alert 
Service Bulletin 737-53A1166, Revision 2, dated May 25, 2006.
    (ii) Part I of the Accomplishment Instructions of Boeing Alert 
Service Bulletin 737-53A1166, Revision 1, dated May 25, 1995.
    (iii) Part I of the Accomplishment Instructions of Boeing Alert 
Service Bulletin 737-53A1166, dated June 30, 1994.

(i) Edge Margin Measurement, Related Investigative Actions, and Repair

    For Model 737-100, -200, and -200C series airplanes having line 
numbers 1 through 999 inclusive, identified as Groups 1 through 3 in 
Boeing Alert Service Bulletin 737-53A1166, Revision 2, dated May 25, 
2006, on which the preventive modification has been installed in 
accordance with Boeing Alert Service Bulletin 737-53A1166, dated 
June 30, 1994; or Boeing Alert Service Bulletin 737-53A1166, 
Revision 1, dated May 25, 1995: Within 60,000 flight cycles after 
accomplishing the preventive modification, determine if the 
modification is classified as interim or permanent by using the edge 
margin measurement classification specified in part 6 of the 
Accomplishment Instructions of Boeing Alert Service Bulletin 737-
53A1166, Revision 2, dated May 25, 2006. In lieu of measuring on the 
airplane, a review of engineering documentation may be used to 
classify the modification if the engineering documentation was 
completed at the time of the modification and has the edge margins 
recorded.
    (1) If the modification is classified as permanent, no further 
action is required by paragraph (i) of this AD.
    (2) If the modification is classified as interim: Within 60,000 
flight cycles after accomplishment of the interim modification of 
the outboard chord of the frame at BS 727 at S-18A, but no earlier 
than 50,000 flight cycles after accomplishment of the modification, 
do a one-time follow-on open-hole eddy current inspection to detect 
cracks in the modified chord, in accordance with part 8 of the 
Accomplishment Instructions of Boeing Alert Service Bulletin 737-
53A1166, Revision 2, dated May 25, 2006. If any crack is found, 
before further flight, repair in accordance with part 3 or part 4, 
as applicable, of the Accomplishment Instructions of Boeing Alert 
Service Bulletin 737-53A1166, Revision 2, dated May 25, 2006; 
except, if the repairs cannot be installed using the identified 
procedures, repair before further flight using a method approved in 
accordance with the procedures specified in paragraph (l) of this 
AD.

(j) Follow-On Inspection for Interim Modification and Repair

    For airplanes having line numbers 1 through 3132 inclusive, on 
which an interim modification of the BS 727 outboard chord as 
defined in part 6 of the Accomplishment Instructions of Boeing Alert 
Service Bulletin 737-53A1166, Revision 2, dated May 25, 2006, has 
been accomplished: Within 60,000 flight cycles after accomplishment 
of the interim modification of the outboard chord of the frame at BS 
727 at S-18A, but no earlier than 50,000 flight cycles after 
accomplishment of the modification, do a one-time follow-on open-
hole eddy current inspection to detect cracks in the modified chord, 
in accordance with part 8 of the Accomplishment Instructions of 
Boeing Alert Service Bulletin 737-53A1166, Revision 2, dated May 25, 
2006. If any crack is found during the inspection required by this 
paragraph, before further flight, repair in accordance with part 3 
or part 4, as applicable, of the Accomplishment Instructions of 
Boeing Alert Service Bulletin 737-53A1166, Revision 2, dated May 25, 
2006; except, where the repairs cannot be installed using the 
procedures identified in this service bulletin, repair before 
further flight using a method approved in accordance with the 
procedures specified in paragraph (l) of this AD.

(k) Exception to the Service Information

    Access and restoration procedures specified in the 
Accomplishment Instructions of Boeing Alert Service Bulletin 737-
53A1166, Revision 2, dated May 25, 2006, are not required by this 
AD. Operators may do those actions following their approved 
maintenance procedures.

(l) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Los Angeles ACO Branch, 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 certification office, send it to the attention of 
the person identified in paragraph (m) of this AD. Information may 
be emailed to: 9-ANM-LAACO-AMOC-Requests@faa.gov.
    (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 Branch, 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.

(m) Related Information

    For more information about this AD, contact George Garrido, 
Aerospace Engineer, Airframe Section, FAA, Los Angeles ACO Branch, 
3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 562-627-
5232; fax: 562-627-5210; email: george.garrido@faa.gov.

(n) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (3) The following service information was approved for IBR on 
December 26, 2012 (77 FR 69747, November 21, 2012).
    (i) Boeing Alert Service Bulletin 737-53A1166, Revision 2, dated 
May 25, 2006.
    (ii) Reserved.
    (4) 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.
    (5) You may view this service information at the FAA, Transport 
Standards Branch, 1601 Lind Avenue SW, Renton, WA. For information 
on the availability of this material at the FAA, call 425-227-1221.
    (6) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Renton, Washington, on January 2, 2018.
Michael Kaszycki,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2018-00256 Filed 1-11-18; 8:45 am]
BILLING CODE 4910-13-P



                                                                  Federal Register / Vol. 83, No. 9 / Friday, January 12, 2018 / Rules and Regulations                                           1529

                                                  Authority: 49 U.S.C. 106(g), 40113, 44701.          inspector, the manager of the local flight             (C&DS), 2600 Westminster Blvd., MC
                                                                                                      standards district office/certificate holding          110–SK57, Seal Beach, CA 90740;
                                              § 39.13   [Amended]                                     district office.                                       telephone 562–797–1717; internet
                                              ■ 2. The FAA amends § 39.13 by adding                   (i) Related Information                                https://www.myboeingfleet.com. You
                                              the following new airworthiness                                                                                may view this service information at the
                                                                                                         (1) Refer to MCAI EASA AD 2014–0045,
                                              directive (AD):                                         dated February 25, 2014; corrected March 4,            FAA, Transport Standards Branch, 1601
                                              2018–01–11 Airbus: Amendment 39–19152;                  2014, for related information. You may                 Lind Avenue SW, Renton, WA. For
                                                  Docket No. FAA–2017–1244; Product                   examine the MCAI on the internet at http://            information on the availability of this
                                                  Identifier 2013–NM–145–AD.                          www.regulations.gov by searching for and               material at the FAA, call 425–227–1221.
                                                                                                      locating Docket No. FAA–2017–1244.                     It is also available on the internet at
                                              (a) Effective Date
                                                                                                         (2) For more information about this AD,             http://www.regulations.gov by searching
                                                This AD becomes effective January 29,                 contact Sanjay Ralhan, Aerospace Engineer,             for and locating Docket No. FAA–2017–
                                              2018.                                                   International Section, Transport Standards             0629.
                                              (b) Affected ADs                                        Branch, FAA, 1601 Lind Avenue SW,
                                                                                                      Renton, WA 98057–3356; telephone: 425–                 Examining the AD Docket
                                                None.                                                 227–1405; fax: 425–227–1149.
                                                                                                                                                               You may examine the AD docket on
                                              (c) Applicability                                       (j) Material Incorporated by Reference                 the internet at http://
                                                 This AD applies to Airbus Model A319–                   None.                                               www.regulations.gov by searching for
                                              115 and A319–133 airplanes, certificated in                                                                    and locating Docket No. FAA–2017–
                                              any category, all manufacturer serial                      Issued in Renton, Washington, on January
                                                                                                      2, 2018.                                               0629; or in person at the Docket
                                              numbers, having received in production
                                              Airbus modification 33125 (installation of
                                                                                                                                                             Management Facility between 9 a.m.
                                                                                                      Michael Kaszycki,
                                              Gaseous Oxygen System (GOS) for                                                                                and 5 p.m., Monday through Friday,
                                                                                                      Acting Director, System Oversight Division,
                                              passengers), except those on which Airbus                                                                      except Federal holidays. The AD docket
                                                                                                      Aircraft Certification Service.
                                              modification 153555 and 155860 have been                                                                       contains this final rule, the regulatory
                                                                                                      [FR Doc. 2018–00343 Filed 1–11–18; 8:45 am]
                                              embodied in production.                                                                                        evaluation, any comments received, and
                                                                                                      BILLING CODE 4910–13–P                                 other information. The address for the
                                              (d) Subject
                                                                                                                                                             Docket Office (phone: 800–647–5527) is
                                                Air Transport Association (ATA) of                                                                           Docket Management Facility, U.S.
                                              America Code 35, Oxygen.                                DEPARTMENT OF TRANSPORTATION                           Department of Transportation, Docket
                                              (e) Reason
                                                                                                      Federal Aviation Administration                        Operations, M–30, West Building
                                                 This AD was prompted by a fire during a                                                                     Ground Floor, Room W12–140, 1200
                                              flight, in the vicinity of the GOS for                  14 CFR Part 39                                         New Jersey Avenue SE, Washington, DC
                                              passengers. We are issuing this AD to prevent                                                                  20590.
                                              an uncontrolled fire in the vicinity of the             [Docket No. FAA–2017–0629; Product                     FOR FURTHER INFORMATION CONTACT:
                                              GOS for passengers, near the cargo area,                Identifier 2016–NM–184–AD; Amendment                   George Garrido, Aerospace Engineer,
                                              which could result in loss of the airplane.             39–19149; AD 2018–01–08]
                                                                                                                                                             Airframe Section, FAA, Los Angeles
                                              (f) Compliance                                          RIN 2120–AA64                                          ACO Branch, 3960 Paramount
                                                 Comply with this AD within the                                                                              Boulevard, Lakewood, CA 90712–4137;
                                              compliance times specified, unless already              Airworthiness Directives; The Boeing                   phone: 562–627–5232; fax: 562–627–
                                              done.                                                   Company Airplanes                                      5210; email: george.garrido@faa.gov.
                                              (g) Required Action(s)                                  AGENCY:  Federal Aviation                              SUPPLEMENTARY INFORMATION:

                                                 Within 30 days after the effective date of           Administration (FAA), DOT.                             Discussion
                                              this AD, request instructions from the                  ACTION: Final rule.
                                                                                                                                                                We issued a notice of proposed
                                              Manager, International Section, Transport
                                              Standards Branch, FAA, to address the                   SUMMARY:   We are adopting a new                       rulemaking (NPRM) to amend 14 CFR
                                              unsafe condition specified in paragraph (e) of          airworthiness directive (AD) for all The               part 39 by adding an AD that would
                                              this AD; and accomplish the actions at the              Boeing Company Model 737–100, –200,                    apply to all The Boeing Company Model
                                              times specified in, and in accordance with,             –200C, –300, –400, and –500 series                     737–100, –200, –200C, –300, –400, and
                                              those instructions. Guidance can be found in            airplanes. This AD was prompted by                     –500 series airplanes. The NPRM
                                              Mandatory Continuing Airworthiness                      reports of fatigue cracking in the frame               published in the Federal Register on
                                              Information (MCAI) European Aviation                                                                           June 30, 2017 (82 FR 29792). The NPRM
                                              Safety Agency (EASA) AD 2014–0045, dated
                                                                                                      outboard chord and in the radius of the
                                                                                                      auxiliary chord at a certain area. This                was prompted by reports of fatigue
                                              February 25, 2014; corrected March 4, 2014.                                                                    cracking in the frame outboard chord
                                                                                                      AD requires inspections to detect this
                                              (h) Alternative Methods of Compliance                   cracking, and corrective action if                     and in the radius of the auxiliary chord
                                              (AMOCs)                                                 necessary. We are issuing this AD to                   at a certain area. The NPRM proposed
                                                 The Manager, International Section,                  address the unsafe condition on these                  to require inspections to detect this
                                              Transport Standards Branch, FAA, has the                products.                                              cracking, and corrective action if
                                              authority to approve AMOCs for this AD, if                                                                     necessary. We are issuing this AD to
                                              requested using the procedures found in 14              DATES: This AD is effective February 16,               detect and correct fatigue cracking of the
                                              CFR 39.19. In accordance with 14 CFR 39.19,             2018 .                                                 outboard and auxiliary chords, which
                                              send your request to your principal inspector             The Director of the Federal Register                 could result in reduced structural
                                              or local Flight Standards District Office, as           approved the incorporation by reference                integrity of the outboard chord and
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                                              appropriate. If sending information directly            of a certain publication listed in this AD
                                              to the International Section, send it to the                                                                   consequent rapid decompression of the
                                                                                                      as of December 26, 2012 (77 FR 69747,                  airplane.
                                              attention of the person identified in                   November 21, 2012).
                                              paragraph (i)(2) of this AD. Information may                                                                   Comments
                                              be emailed to: 9-ANM-116-AMOC-                          ADDRESSES: For service information
                                              REQUESTS@faa.gov. Before using any                      identified in this final rule, contact                   We gave the public the opportunity to
                                              approved AMOC, notify your appropriate                  Boeing Commercial Airplanes,                           participate in developing this final rule.
                                              principal inspector, or lacking a principal             Attention: Contractual & Data Services                 The following presents the comments


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                                              1530                    Federal Register / Vol. 83, No. 9 / Friday, January 12, 2018 / Rules and Regulations

                                              received on the NPRM and the FAA’s                               effectivity and the requirements                          To clarify the criteria in paragraph
                                              response to each comment.                                        identified in paragraph (h) of the                     (h)(3) of this AD, we have added Note
                                                                                                               proposed AD be clarified in some way                   1 to paragraph (h)(3) of this AD to
                                              Effect of Winglets on Accomplishment
                                                                                                               due to extensive sub-paragraphs.                       reference the optional terminating
                                              of the Proposed Actions
                                                                                                               Swiftair recommended that the ‘‘and’’ in               action specified in paragraph (r) of AD
                                                 Aviation Partners Boeing stated that                          the sentence be emphasized.                            2012–23–04.
                                              accomplishing Supplemental Type                                    We acknowledge the commenter’s                       Conclusion
                                              Certificate (STC) ST01219SE does not                             concern. However, we cannot
                                              affect the ability to accomplish the                             emphasize or highlight specific text in                   We reviewed the relevant data,
                                              actions specified in the NPRM.                                   an AD. The affected airplanes in                       considered the comments received, and
                                                 We agree with the commenter. We                               paragraph (h) of the AD are those that                 determined that air safety and the
                                              have redesignated paragraph (c) of the                           meet all of the criteria specified in the              public interest require adopting this
                                              proposed AD as (c)(1) and added                                  sub-paragraphs. We have not changed                    final rule with the changes described
                                              paragraph (c)(2) to this AD to state that                        this AD in this regard.                                previously and minor editorial changes.
                                              installation of STC ST01219SE does not                                                                                  We have determined that these minor
                                              affect the ability to accomplish the                               Swiftair S.A. also stated that the                   changes:
                                              actions required by this AD. Therefore,                          language describing the requirements in                   • Are consistent with the intent that
                                              for airplanes on which STC ST01219SE                             paragraph (j) of the proposed AD is                    was proposed in the NPRM for
                                              is installed, a ‘‘change in product’’                            confusing. Swiftair added that the pre-                correcting the unsafe condition; and
                                              alternative methods of compliance                                regulatory text in the NPRM refers to                     • Do not add any additional burden
                                              (AMOC) approval request is not                                   actions from AD 2012–23–04,                            upon the public than was already
                                              necessary to comply with the                                     Amendment 39–17260 (77 FR 69747,                       proposed in the NPRM.
                                              requirements of 14 CFR 39.17.                                    November 21, 2012) (‘‘AD 2012–23–04’’)                    We also determined that these
                                                                                                               and the combination of that rulemaking                 changes will not increase the economic
                                              Request To Remove Certain Language                               and the actions in the proposed AD is                  burden on any operator or increase the
                                              in Paragraph (i) of the Proposed AD                              confusing. Swiftair also stated that                   scope of this final rule.
                                                Boeing asked that the language ‘‘and                           paragraph (r) of AD 2012–23–04 should
                                              repair’’ be removed from paragraph (i) of                        be explained in the current                            Related Service Information Under 1
                                              the proposed AD. Boeing stated that the                          requirements and not in the pre-                       CFR Part 51
                                              language in paragraph (i) refers to a                            regulatory text.                                         We reviewed Boeing Alert Service
                                              section in Part 6 of Boeing Alert Service                           We agree that some clarification is                 Bulletin 737–53A1166, Revision 2,
                                              Bulletin 737–53A1166, Revision 2,                                necessary. Concerning the request to                   dated May 25, 2006. The service
                                              dated May 25, 2006, which is to                                  include the current requirements of AD                 information describes procedures for
                                              determine if the modification should be                          2012–23–04 in this AD, we would have                   inspections for cracks of the body
                                              classified as interim or permanent.                              had to issue different rulemaking.                     station (BS) 727 frame outboard chord
                                              Boeing noted that the additional                                 Instead of a stand-alone AD, the                       and in the radius of the auxiliary chord,
                                              language ‘‘and repair’’ is not part of that                      alternative would have been to                         and repair or replacement if necessary.
                                              section, and suggested it be deleted.                            supersede AD 2012–23–04, which                         This service information is reasonably
                                                We agree with the commenter’s                                  would have resulted in a single but                    available because the interested parties
                                              request for the reason provided. We                              considerably more complex AD. All                      have access to it through their normal
                                              have deleted ‘‘and repair’’ from                                 operators identified in AD 2012–23–04                  course of business or by the means
                                              paragraph (i) of this AD.                                        would then have to show compliance                     identified in the ADDRESSES section.
                                                                                                               with the new supersedure AD. Our
                                              Request To Clarify Certain Language                                                                                     Costs of Compliance
                                                                                                               experience with similar complex ADs,
                                                Swiftair S.A. stated that the language                         and with operator feedback, is that it is                We estimate that this AD affects 160
                                              describing the requirements in                                   preferable to leave the existing AD as is              airplanes of U.S. registry. We estimate
                                              paragraph (h) of the proposed AD is                              and issue a related but stand-alone AD                 the following costs to comply with this
                                              confusing. Swiftair asked that the                               such as this one.                                      AD:

                                                                                                                             ESTIMATED COSTS
                                                                                                                                                                 Affected
                                                                                                                                                                 airplanes         Cost per          Cost on
                                                                      Action                                                 Labor cost                           of U.S.          product        U.S. operators
                                                                                                                                                                  registry

                                              Detailed and High Frequency Eddy Current                      6 work-hours × $85 per hour = $510 per                            5          $510   $2,550 per inspec-
                                                (HFEC) inspections.                                           inspection cycle.                                                                   tion cycle.
                                              One-time follow-on HFEC inspection ..........                 9 work-hours × $85 per hour = $765 .........                   5              765   $3,825.
                                              HFEC inspection .........................................     9 work-hours × $85 per hour = $765 .........                 150              765   $114,750.
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                                                We estimate the following costs to do                          based on the results of the inspections.               number of aircraft that might need these
                                              any necessary repairs that are required                          We have no way of determining the                      repairs:




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                                                                  Federal Register / Vol. 83, No. 9 / Friday, January 12, 2018 / Rules and Regulations                                                   1531

                                                                                                                   ON-CONDITION COSTS
                                                                                                                                                                                                   Cost per
                                                                         Action                                                         Labor cost                              Parts cost         product

                                              Repair of cracking of the outboard chord frame ..........         514 work-hours × $85 per hour = $43,690 ..................           $13,586           $57,276.
                                              Repair of cracking of the outboard chord ....................     49 work-hours × $85 per hour = $4,165 ......................           4,255             8,420.



                                              Authority for This Rulemaking                           under the criteria of the Regulatory                    We are issuing this AD to detect and correct
                                                                                                      Flexibility Act.                                        fatigue cracking of the outboard and auxiliary
                                                 Title 49 of the United States Code                                                                           chords, which could result in reduced
                                              specifies the FAA’s authority to issue                  List of Subjects in 14 CFR Part 39                      structural integrity of the outboard chord and
                                              rules on aviation safety. Subtitle I,                                                                           consequent rapid decompression of the
                                                                                                        Air transportation, Aircraft, Aviation
                                              section 106, describes the authority of                                                                         airplane.
                                              the FAA Administrator. Subtitle VII:                    safety, Incorporation by reference,
                                                                                                      Safety.                                                 (f) Compliance
                                              Aviation Programs, describes in more
                                              detail the scope of the Agency’s                                                                                   Comply with this AD within the
                                                                                                      Adoption of the Amendment
                                                                                                                                                              compliance times specified, unless already
                                              authority.                                                Accordingly, under the authority                      done.
                                                 We are issuing this rulemaking under
                                                                                                      delegated to me by the Administrator,
                                              the authority described in Subtitle VII,                                                                        (g) Repetitive Inspections and Corrective
                                                                                                      the FAA amends 14 CFR part 39 as                        Action
                                              Part A, Subpart III, Section 44701:
                                                                                                      follows:
                                              ‘‘General requirements.’’ Under that                                                                               For airplanes identified in paragraph (h) of
                                              section, Congress charges the FAA with                  PART 39—AIRWORTHINESS                                   this AD: Within 4,500 flight cycles or 24
                                              promoting safe flight of civil aircraft in                                                                      months after the effective date of this AD,
                                                                                                      DIRECTIVES                                              whichever occurs first, do internal detailed
                                              air commerce by prescribing regulations
                                                                                                                                                              and High Frequency Eddy Current (HFEC)
                                              for practices, methods, and procedures                  ■ 1. The authority citation for part 39                 inspections to detect cracks in the auxiliary
                                              the Administrator finds necessary for                   continues to read as follows:                           chord radius, in accordance with Part 1 of the
                                              safety in air commerce. This regulation                     Authority: 49 U.S.C. 106(g), 40113, 44701.          Accomplishment Instructions of Boeing Alert
                                              is within the scope of that authority                                                                           Service Bulletin 737–53A1166, Revision 2,
                                              because it addresses an unsafe condition                § 39.13     [Amended]                                   dated May 25, 2006. If any crack is found
                                              that is likely to exist or develop on                   ■ 2. The FAA amends § 39.13 by adding                   during any inspection required by this
                                              products identified in this rulemaking                                                                          paragraph, before further flight, repair using
                                                                                                      the following new airworthiness                         a method approved in accordance with the
                                              action.                                                 directive (AD):
                                                 This AD is issued in accordance with                                                                         procedures specified in paragraph (l) of this
                                                                                                      2018–01–08 The Boeing Company:                          AD. Repeat the inspections thereafter at
                                              authority delegated by the Executive
                                                                                                          Amendment 39–19149; Docket No.                      intervals not to exceed 15,000 flight cycles.
                                              Director, Aircraft Certification Service,                                                                       Replacement of the outboard chord of the
                                                                                                          FAA–2017–0629; Product Identifier
                                              as authorized by FAA Order 8000.51C.                        2016–NM–184–AD.                                     frame at BS 727 concurrently with the
                                              In accordance with that order, issuance                                                                         installation of the preventive modification of
                                              of ADs is normally a function of the                    (a) Effective Date                                      the outboard chord in accordance with Part
                                              Compliance and Airworthiness                              This AD is effective February 16, 2018.               6 of the Accomplishment Instructions of
                                              Division, but during this transition                                                                            Boeing Alert Service Bulletin 737–53A1166,
                                                                                                      (b) Affected ADs                                        Revision 2, dated May 25, 2006, terminates
                                              period, the Executive Director has
                                                                                                        None.                                                 the repetitive inspections required by this
                                              delegated the authority to issue ADs
                                                                                                                                                              paragraph.
                                              applicable to transport category                        (c) Applicability
                                              airplanes to the Director of the System                    (1) This AD applies to all The Boeing                (h) Airplanes for Actions Specified in
                                              Oversight Division.                                     Company Model 737–100, –200, –200C,                     Paragraph (g) of This AD
                                                                                                      –300, –400, and –500 series airplanes,                     The actions specified in paragraph (g) of
                                              Regulatory Findings                                     certificated in any category.                           this AD are required for airplanes that meet
                                                This AD will not have federalism                         (2) Installation of Supplemental Type                the criteria of paragraphs (h)(1), (h)(2), (h)(3),
                                              implications under Executive Order                      Certificate (STC) ST01219SE (http://                    and (h)(4) of this AD.
                                              13132. This AD will not have a                          rgl.faa.gov/Regulatory_and_Guidance_                       (1) Model 737–100, –200, and –200C series
                                                                                                      Library/rgstc.nsf/0/EBD1CEC7B301293                     airplanes, line numbers 1 through 999
                                              substantial direct effect on the States, on
                                                                                                      E86257CB30045557A?OpenDocument                          inclusive.
                                              the relationship between the national                                                                              (2) Airplanes identified as Groups 1, 2, and
                                                                                                      &Highlight=st01219se) does not affect the
                                              government and the States, or on the                    ability to accomplish the actions required by           3 in Boeing Alert Service Bulletin 737–
                                              distribution of power and                               this AD. Therefore, for airplanes on which              53A1166, Revision 2, dated May 25, 2006.
                                              responsibilities among the various                      STC ST01219SE is installed, a ‘‘change in                  (3) Airplanes on which a preventive
                                              levels of government.                                   product’’ alternative method of compliance              modification has been installed in
                                                For the reasons discussed above, I                    (AMOC) approval request is not necessary to             accordance with the method specified in
                                              certify that this AD:                                   comply with the requirements of 14 CFR                  paragraph (h)(3)(i), (h)(3)(ii), or (h)(3)(iii) of
                                                (1) Is not a ‘‘significant regulatory                 39.17.                                                  this AD.
                                              action’’ under Executive Order 12866,                                                                              Note 1 to paragraph (h)(3) of this AD: The
                                                                                                      (d) Subject                                             modification identified in paragraph (h)(3) of
                                                (2) Is not a ‘‘significant rule’’ under
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                                                                                                        Air Transport Association (ATA) of                    this AD is also specified in paragraph (r) of
                                              DOT Regulatory Policies and Procedures                                                                          AD 2012–23–04, Amendment 39–17260 (77
                                                                                                      America Code 53, Fuselage.
                                              (44 FR 11034, February 26, 1979),                                                                               FR 69747, November 21, 2012), as optional
                                                (3) Will not affect intrastate aviation               (e) Unsafe Condition                                    terminating action.
                                              in Alaska, and                                             This AD was prompted by reports of                      (i) Part 6 of the Accomplishment
                                                (4) Will not have a significant                       fatigue cracking in the frame outboard chord            Instructions of Boeing Alert Service Bulletin
                                              economic impact, positive or negative,                  and in the radius of the auxiliary chord at             737–53A1166, Revision 2, dated May 25,
                                              on a substantial number of small entities               body station (BS) 727 and stringer (S) 18A.             2006.



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                                              1532                Federal Register / Vol. 83, No. 9 / Friday, January 12, 2018 / Rules and Regulations

                                                (ii) Part II of the Accomplishment                    (j) Follow-On Inspection for Interim                   Airframe Section, FAA, Los Angeles ACO
                                              Instructions of Boeing Alert Service Bulletin           Modification and Repair                                Branch, 3960 Paramount Boulevard,
                                              737–53A1166, Revision 1, dated May 25,                     For airplanes having line numbers 1                 Lakewood, CA 90712–4137; phone: 562–627–
                                              1995.                                                   through 3132 inclusive, on which an interim            5232; fax: 562–627–5210; email:
                                                (iii) Part II of the Accomplishment                   modification of the BS 727 outboard chord as           george.garrido@faa.gov.
                                              Instructions of Boeing Alert Service Bulletin           defined in part 6 of the Accomplishment                (n) Material Incorporated by Reference
                                              737–53A1166, dated June 30, 1994.                       Instructions of Boeing Alert Service Bulletin
                                                (4) Airplanes on which the outboard chord             737–53A1166, Revision 2, dated May 25,                    (1) The Director of the Federal Register
                                              has not been replaced in accordance with the            2006, has been accomplished: Within 60,000             approved the incorporation by reference
                                              method specified in paragraph (h)(4)(i),                flight cycles after accomplishment of the              (IBR) of the service information listed in this
                                                                                                      interim modification of the outboard chord of          paragraph under 5 U.S.C. 552(a) and 1 CFR
                                              (h)(4)(ii), or (h)(4)(iii) of this AD.
                                                                                                      the frame at BS 727 at S–18A, but no earlier           part 51.
                                                (i) Part 3 of the Accomplishment
                                                                                                      than 50,000 flight cycles after                           (2) You must use this service information
                                              Instructions of Boeing Alert Service Bulletin
                                                                                                      accomplishment of the modification, do a               as applicable to do the actions required by
                                              737–53A1166, Revision 2, dated May 25,
                                                                                                      one-time follow-on open-hole eddy current              this AD, unless the AD specifies otherwise.
                                              2006.                                                                                                             (3) The following service information was
                                                                                                      inspection to detect cracks in the modified
                                                (ii) Part I of the Accomplishment                                                                            approved for IBR on December 26, 2012 (77
                                                                                                      chord, in accordance with part 8 of the
                                              Instructions of Boeing Alert Service Bulletin                                                                  FR 69747, November 21, 2012).
                                                                                                      Accomplishment Instructions of Boeing Alert
                                              737–53A1166, Revision 1, dated May 25,                  Service Bulletin 737–53A1166, Revision 2,                 (i) Boeing Alert Service Bulletin 737–
                                              1995.                                                   dated May 25, 2006. If any crack is found              53A1166, Revision 2, dated May 25, 2006.
                                                (iii) Part I of the Accomplishment                    during the inspection required by this                    (ii) Reserved.
                                              Instructions of Boeing Alert Service Bulletin           paragraph, before further flight, repair in               (4) For service information identified in
                                              737–53A1166, dated June 30, 1994.                       accordance with part 3 or part 4, as                   this AD, contact Boeing Commercial
                                              (i) Edge Margin Measurement, Related                    applicable, of the Accomplishment                      Airplanes, Attention: Contractual & Data
                                                                                                      Instructions of Boeing Alert Service Bulletin          Services (C&DS), 2600 Westminster Blvd.,
                                              Investigative Actions, and Repair
                                                                                                      737–53A1166, Revision 2, dated May 25,                 MC 110–SK57, Seal Beach, CA 90740;
                                                 For Model 737–100, –200, and –200C                   2006; except, where the repairs cannot be              telephone 562–797–1717; internet https://
                                              series airplanes having line numbers 1                  installed using the procedures identified in           www.myboeingfleet.com.
                                              through 999 inclusive, identified as Groups             this service bulletin, repair before further              (5) You may view this service information
                                              1 through 3 in Boeing Alert Service Bulletin            flight using a method approved in                      at the FAA, Transport Standards Branch,
                                              737–53A1166, Revision 2, dated May 25,                  accordance with the procedures specified in            1601 Lind Avenue SW, Renton, WA. For
                                              2006, on which the preventive modification              paragraph (l) of this AD.                              information on the availability of this
                                              has been installed in accordance with Boeing            (k) Exception to the Service Information               material at the FAA, call 425–227–1221.
                                              Alert Service Bulletin 737–53A1166, dated                                                                         (6) You may view this service information
                                              June 30, 1994; or Boeing Alert Service                    Access and restoration procedures                    that is incorporated by reference at the
                                              Bulletin 737–53A1166, Revision 1, dated                 specified in the Accomplishment                        National Archives and Records
                                                                                                      Instructions of Boeing Alert Service Bulletin          Administration (NARA). For information on
                                              May 25, 1995: Within 60,000 flight cycles
                                                                                                      737–53A1166, Revision 2, dated May 25,                 the availability of this material at NARA, call
                                              after accomplishing the preventive
                                                                                                      2006, are not required by this AD. Operators
                                              modification, determine if the modification is                                                                 202–741–6030, or go to: http://
                                                                                                      may do those actions following their
                                              classified as interim or permanent by using                                                                    www.archives.gov/federal-register/cfr/ibr-
                                                                                                      approved maintenance procedures.
                                              the edge margin measurement classification                                                                     locations.html.
                                              specified in part 6 of the Accomplishment               (l) Alternative Methods of Compliance                     Issued in Renton, Washington, on January
                                              Instructions of Boeing Alert Service Bulletin           (AMOCs)                                                2, 2018.
                                              737–53A1166, Revision 2, dated May 25,                     (1) The Manager, Los Angeles ACO Branch,            Michael Kaszycki,
                                              2006. In lieu of measuring on the airplane,             FAA, has the authority to approve AMOCs
                                              a review of engineering documentation may                                                                      Acting Director, System Oversight Division,
                                                                                                      for this AD, if requested using the procedures
                                              be used to classify the modification if the             found in 14 CFR 39.19. In accordance with              Aircraft Certification Service.
                                              engineering documentation was completed at              14 CFR 39.19, send your request to your                [FR Doc. 2018–00256 Filed 1–11–18; 8:45 am]
                                              the time of the modification and has the edge           principal inspector or local Flight Standards          BILLING CODE 4910–13–P
                                              margins recorded.                                       District Office, as appropriate. If sending
                                                 (1) If the modification is classified as             information directly to the manager of the
                                              permanent, no further action is required by             certification office, send it to the attention of      DEPARTMENT OF TRANSPORTATION
                                              paragraph (i) of this AD.                               the person identified in paragraph (m) of this
                                                 (2) If the modification is classified as             AD. Information may be emailed to: 9-ANM-              Federal Aviation Administration
                                              interim: Within 60,000 flight cycles after              LAACO-AMOC-Requests@faa.gov.
                                              accomplishment of the interim modification                 (2) Before using any approved AMOC,
                                                                                                                                                             14 CFR Part 39
                                              of the outboard chord of the frame at BS 727            notify your appropriate principal inspector,
                                              at S–18A, but no earlier than 50,000 flight             or lacking a principal inspector, the manager          [Docket No. FAA–2017–1242; Product
                                              cycles after accomplishment of the                      of the local flight standards district office/         Identifier 2013–NM–043–AD; Amendment
                                              modification, do a one-time follow-on open-             certificate holding district office.                   39–19150; AD 2018–01–09]
                                              hole eddy current inspection to detect cracks              (3) An AMOC that provides an acceptable
                                                                                                      level of safety may be used for any repair,            RIN 2120–AA64
                                              in the modified chord, in accordance with
                                                                                                      modification, or alteration required by this
                                              part 8 of the Accomplishment Instructions of
                                                                                                      AD if it is approved by the Boeing                     Airworthiness Directives; Fokker
                                              Boeing Alert Service Bulletin 737–53A1166,
                                                                                                      Commercial Airplanes Organization                      Services B.V. Airplanes
                                              Revision 2, dated May 25, 2006. If any crack            Designation Authorization (ODA) that has
                                              is found, before further flight, repair in              been authorized by the Manager, Los Angeles            AGENCY:  Federal Aviation
                                              accordance with part 3 or part 4, as                    ACO Branch, to make those findings. To be              Administration (FAA), DOT.
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                                              applicable, of the Accomplishment                       approved, the repair method, modification
                                              Instructions of Boeing Alert Service Bulletin                                                                  ACTION: Final rule; request for
                                                                                                      deviation, or alteration deviation must meet
                                              737–53A1166, Revision 2, dated May 25,                  the certification basis of the airplane, and the       comments.
                                              2006; except, if the repairs cannot be                  approval must specifically refer to this AD.
                                              installed using the identified procedures,                                                                     SUMMARY:  We are superseding
                                              repair before further flight using a method             (m) Related Information                                Airworthiness Directive (AD) 95–25–02,
                                              approved in accordance with the procedures                For more information about this AD,                  which applied to certain Fokker
                                              specified in paragraph (l) of this AD.                  contact George Garrido, Aerospace Engineer,            Services B.V. Model F28 Mark 0100


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Document Created: 2018-10-26 09:51:50
Document Modified: 2018-10-26 09:51:50
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal rule.
DatesThis AD is effective February 16, 2018 .
ContactGeorge Garrido, Aerospace Engineer, Airframe Section, FAA, Los Angeles ACO Branch, 3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 562-627-5232; fax: 562-627- 5210; email: [email protected]
FR Citation83 FR 1529 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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