80_FR_55222 80 FR 55045 - Airworthiness Directives; The Boeing Company Airplanes

80 FR 55045 - Airworthiness Directives; The Boeing Company Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 80, Issue 177 (September 14, 2015)

Page Range55045-55049
FR Document2015-22724

We propose to supersede Airworthiness Directive (AD) 2012-12- 04, which applies to certain The Boeing Company Model 737-300, -400, and -500 series airplanes. AD 2012-12-04 currently requires repetitive external detailed inspections and nondestructive inspections to detect cracks in the fuselage skin along the chem-mill steps at stringers S-1 and S-2R, between station (STA) 400 and STA 460, and repair if necessary. Since we issued AD 2012-12-04, we have determined that, for certain airplanes, the skin pockets adjacent to the Air Traffic Control (ATC) antenna are susceptible to widespread fatigue damage. This proposed AD would require a preventive modification of the fuselage skin at crown stringers S-1 and S-2R. This proposed AD would reduce inspection thresholds and repetitive intervals for certain airplanes. We are proposing this AD to detect and correct fatigue cracking of the fuselage skin panels at the chem-mill steps, which could result in sudden fracture and failure of the fuselage skin panels, and consequent rapid decompression of the airplane.

Federal Register, Volume 80 Issue 177 (Monday, September 14, 2015)
[Federal Register Volume 80, Number 177 (Monday, September 14, 2015)]
[Proposed Rules]
[Pages 55045-55049]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2015-22724]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-3628; Directorate Identifier 2015-NM-025-AD]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to supersede Airworthiness Directive (AD) 2012-12-
04, which applies to certain The Boeing Company Model 737-300, -400, 
and -500 series airplanes. AD 2012-12-04 currently requires repetitive 
external detailed inspections and nondestructive inspections to detect 
cracks in the fuselage skin along the chem-mill steps at stringers S-1 
and S-2R, between station (STA) 400 and STA 460, and repair if 
necessary. Since we issued AD 2012-12-04, we have determined that, for 
certain airplanes, the skin pockets adjacent to the Air Traffic Control 
(ATC) antenna are susceptible to widespread fatigue damage. This 
proposed AD would require a preventive modification of the fuselage 
skin at crown stringers S-1 and S-2R. This proposed AD would reduce 
inspection thresholds and repetitive intervals for certain airplanes. 
We are proposing this AD to detect and correct fatigue cracking of the 
fuselage skin panels at the chem-mill steps, which could result in 
sudden fracture and failure of the fuselage skin panels,

[[Page 55046]]

and consequent rapid decompression of the airplane.

DATES: We must receive comments on this proposed AD by October 29, 
2015.

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.
     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: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    For service information identified in this proposed AD, contact 
Boeing Commercial Airplanes, Attention: Data & Services Management, 
P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone 206-544-
5000, extension 1; fax 206-766-5680; 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-2015-
3628.

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-2015-
3628; 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: Wayne Lockett, Aerospace Engineer, 
Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office, 
1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-6447; fax: 
425-917-6590; 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-2015-3628; 
Directorate Identifier 2015-NM-025-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

    On May 31, 2012, we issued AD 2012-12-04, Amendment 39-17083 (77 FR 
36134, June 18, 2012), for certain The Boeing Company Model 737-300, -
400, and -500 series airplanes. AD 2012-12-04 requires repetitive 
external detailed inspections and nondestructive inspections to detect 
cracks in the fuselage skin along the chem-mill steps at stringers S-1 
and S-2R, between station (STA) 400 and STA 460, and repair if 
necessary. AD 2012-12-04 resulted from reports of crack findings of the 
fuselage skin at the chem-mill steps. We issued AD 2012-12-04 to detect 
and correct fatigue cracking of the fuselage skin panels at the chem-
mill steps, which could result in sudden fracture and failure of the 
fuselage skin panels, and consequent rapid decompression of the 
airplane.

Widespread Fatigue Damage

    Structural fatigue damage is progressive. It begins as minute 
cracks, and those cracks grow under the action of repeated stresses. 
This can happen because of normal operational conditions and design 
attributes, or because of isolated situations or incidents such as 
material defects, poor fabrication quality, or corrosion pits, dings, 
or scratches. Fatigue damage can occur locally, in small areas or 
structural design details, or globally. Global fatigue damage is 
general degradation of large areas of structure with similar structural 
details and stress levels. Multiple-site damage is global damage that 
occurs in a large structural element such as a single rivet line of a 
lap splice joining two large skin panels. Global damage can also occur 
in multiple elements such as adjacent frames or stringers. Multiple-
site-damage and multiple-element-damage cracks are typically too small 
initially to be reliably detected with normal inspection methods. 
Without intervention, these cracks will grow, and eventually compromise 
the structural integrity of the airplane, in a condition known as 
widespread fatigue damage (WFD). As an airplane ages, WFD will likely 
occur, and will certainly occur if the airplane is operated long enough 
without any intervention.
    The FAA's WFD final rule (75 FR 69746, November 15, 2010) became 
effective on January 14, 2011. The WFD rule requires certain actions to 
prevent structural failure due to WFD throughout the operational life 
of certain existing transport category airplanes and all of these 
airplanes that will be certificated in the future. For existing and 
future airplanes subject to the WFD rule, the rule requires that DAHs 
establish a limit of validity (LOV) of the engineering data that 
support the structural maintenance program. Operators affected by the 
WFD rule may not fly an airplane beyond its LOV, unless an extended LOV 
is approved.
    The WFD rule (75 FR 69746, November 15, 2010) does not require 
identifying and developing maintenance actions if the DAHs can show 
that such actions are not necessary to prevent WFD before the airplane 
reaches the LOV. Many LOVs, however, do depend on accomplishment of 
future maintenance actions. As stated in the WFD rule, any maintenance 
actions necessary to reach the LOV will be mandated by airworthiness 
directives through separate rulemaking actions.
    In the context of WFD, this action is necessary to enable DAHs to 
propose LOVs that allow operators the longest operational lives for 
their airplanes, and still ensure that WFD will not occur. This 
approach allows for an implementation strategy that provides 
flexibility to DAHs in determining the timing of service information 
development (with FAA approval), while providing operators with 
certainty regarding the LOV applicable to their airplanes.

Actions Since AD 2012-12-04, Amendment 39-17083 (77 FR 36134, June 18, 
2012), Was Issued

    The preamble to AD 2012-12-04, Amendment 39-17083 (77 FR 36134, 
June 18, 2012), specified that we considered the requirements ``interim 
action.'' AD 2012-12-04 explained that we might consider further 
rulemaking if final action is later identified. We now

[[Page 55047]]

have determined that it is necessary to initiate further rulemaking to 
require modification of the fuselage skin at crown stringers S-1 and S-
2R, and to reduce inspection thresholds and repetitive intervals for 
certain airplanes.

Related Service Information Under 1 CFR Part 51

    We reviewed Boeing Alert Service Bulletin 737-53A1293, Revision 3, 
dated January 23, 2015. The service information describes procedures 
for repetitive external detailed inspections and non-destructive 
inspections to detect cracks in the fuselage skin along the chem-mill 
steps at stringers S-1 and S-2R, between STA 400 and STA 460, and 
repair of any cracking. The service information also describes 
procedures for a modification of the chem-milled steps at the locations 
identified, including related investigative actions and corrective 
actions. 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 of this 
NPRM.

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.

Proposed AD Requirements

    Although this proposed AD does not explicitly restate the 
requirements of AD 2012-12-04, Amendment 39-17083 (77 FR 36134, June 
18, 2012), this proposed AD would retain all of the requirements. Those 
requirements are referenced in the service information identified 
previously, which, in turn, is referenced in this proposed AD. This 
proposed AD would require accomplishing the actions specified in the 
service information described previously, except as discussed under 
``Difference Between This Proposed AD and the Service Bulletin.'' 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-2015-3628.
    The phrase ``related investigative actions'' is used in this 
proposed AD. ``Related investigative actions'' are follow-on actions 
that (1) are related to the primary action, and (2) further investigate 
the nature of any condition found. Related investigative actions in an 
AD could include, for example, inspections.
    The phrase ``corrective actions'' is used in this proposed AD. 
``Corrective actions'' are actions that correct or address any 
condition found. Corrective actions in an AD could include, for 
example, repairs.

Explanation of Compliance Time

    The compliance time for the modification specified in this proposed 
AD for addressing WFD was established to ensure that discrepant 
structure is modified before WFD develops in airplanes. Standard 
inspection techniques cannot be relied on to detect WFD before it 
becomes a hazard to flight. We will not grant any extensions of the 
compliance time to complete any AD-mandated service bulletin related to 
WFD without extensive new data that would substantiate and clearly 
warrant such an extension.

Difference Between This Proposed AD and the Service Bulletin

    Although Boeing Alert Service Bulletin 737-53A1293, Revision 3, 
dated January 23, 2015, specifies that operators may contact the 
manufacturer for disposition of certain repair conditions, this 
proposed AD would require repairing those conditions in one of the 
following ways:
     In accordance with a method that we approve; or
     Using data that meet the certification basis of the 
airplane, and that have been approved by the Boeing Commercial 
Airplanes Organization Designation Authorization (ODA) whom we have 
authorized to make those findings.

Costs of Compliance

    We estimate that this proposed AD affects 186 airplanes of U.S. 
registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                Cost on U.S.
              Action                    Labor cost        Parts cost    Cost per product          operators
----------------------------------------------------------------------------------------------------------------
Retained inspections from AD 2012- Between 7 and 15               $0  Between $595 and      Between $110,670 and
 12-04, Amendment 39-17083 (77 FR   work-hours x $85                   $1,275 per            $237,150 per
 36134, June 18, 2012).             per hour, depending                inspection cycle.     inspection cycle.
                                    on airplane
                                    configuration =
                                    between $595 and
                                    $1,275 per
                                    inspection cycle.
New modification.................  236 work-hours x $85        (\1\)  $20,060.............  $3,731,160.
                                    per hour = $20,060.
----------------------------------------------------------------------------------------------------------------
\1\ We currently have no specific cost estimates associated with the parts necessary for the proposed
  modification. We cannot determine the cost of the materials because the modification parts must be sized at
  the time the modification is installed, taking into account any existing repairs in the area.

    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.

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 have 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

[[Page 55048]]

on the distribution of power and responsibilities among the various 
levels of government.
    For the reasons discussed above, I certify that the 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) 
2012-12-04, Amendment 39-17083 (77 FR 36134, June 18, 2012), and adding 
the following new AD:

The Boeing Company: Docket No. FAA-2015-3628; Directorate Identifier 
2015-NM-025-AD.

(a) Comments Due Date

    The FAA must receive comments on this AD action by October 29, 
2015.

(b) Affected ADs

    This AD replaces AD 2012-12-04, Amendment 39-17083 (77 FR 36134, 
June 18, 2012).

(c) Applicability

    This AD applies to The Boeing Company Model 737-300, -400, and -
500 series airplanes, certificated in any category, as identified in 
Boeing Alert Service Bulletin 737-53A1293, Revision 3, dated January 
23, 2015.

(d) Subject

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

(e) Unsafe Condition

    This AD was prompted by reports of cracks found on the fuselage 
skin at the chem-mill steps, and the determination that, for certain 
airplanes, the skin pockets adjacent to the Air Traffic Control 
(ATC) antenna are susceptible to widespread fatigue damage. We are 
issuing this AD to detect and correct fatigue cracking of the 
fuselage skin panels at the chem-mill steps, which could result in 
sudden fracture and failure of the fuselage skin panels, and 
consequent rapid decompression of the airplane.

(f) Compliance

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

(g) Inspections

    At the applicable time specified in tables 1, 2, 3, and 5 of 
paragraph 1.E., ``Compliance,'' of Boeing Alert Service Bulletin 
737-53A1293, Revision 3, dated January 23, 2015, except as required 
by paragraphs (j)(1) and (j)(2) of this AD: Do the actions specified 
in paragraphs (g)(1) and (g)(2) of this AD, in accordance with the 
Accomplishment Instructions of Boeing Alert Service Bulletin 737-
53A1293, Revision 3, dated January 23, 2015, except as required by 
paragraph (j)(3) of this AD. Repeat the applicable inspections 
thereafter at the applicable times specified in paragraph 1.E., 
``Compliance,'' of Boeing Alert Service Bulletin 737-53A1293, 
Revision 3, dated January 23, 2015.
    (1) Do an external detailed inspection for cracking of the 
fuselage skin chem-mill steps.
    (2) Do an external non-destructive (medium frequency eddy 
current, magneto optical imaging, C-Scan, or ultrasonic phased 
array) inspection for cracking of the fuselage skin chem-mill steps.

(h) Preventive Modification or Repair

    If any cracking is found during any inspection required by 
paragraph (g) of this AD, do the applicable actions specified in 
paragraph (h)(1) or (h)(2) of this AD.
    (1) Repair before further flight in accordance with Part 2 of 
the Accomplishment Instructions of Boeing Alert Service Bulletin 
737-53A1293, Revision 3, dated January 23, 2015.
    (2) At the applicable time specified in tables 1, 2, 3, and 5 of 
paragraph 1.E., ``Compliance,'' of Boeing Alert Service Bulletin 
737-53A1293, Revision 3, dated January 23, 2015, except as required 
by paragraphs (j)(1) and (j)(2) of this AD: Do a preventive 
modification of the fuselage skin at crown stringers S-1 and S-2R, 
including all applicable related investigative actions in accordance 
with Part 9 of the Accomplishment Instructions of Boeing Alert 
Service Bulletin 737-53A1293, Revision 3, dated January 23, 2015. Do 
all applicable related investigative actions concurrently with the 
modification.

(i) Post-Repair Inspections/Post-Modification Inspections

    The post-repair/post-modification inspections specified in 
tables 4 and 6 of paragraph 1.E., ``Compliance,'' of Boeing Alert 
Service Bulletin 737-53A1293, Revision 3, dated January 23, 2015, 
are not required by this AD.

    Note 1 to paragraph (h) of this AD: The post-repair/post-
modification inspections specified in tables 4 and 6 of paragraph 
1.E., ``Compliance,'' of Boeing Alert Service Bulletin 737-53A1293, 
Revision 3, dated January 23, 2015, may be used in support of 
compliance with section 121.1109(c)(2) or 129.109(c)(2) of the 
Federal Aviation Regulations (14 CFR 121.1109(c)(2) or 14 CFR 
129.109(c)(2)). The corresponding actions specified in the 
Accomplishment Instructions of Boeing Alert Service Bulletin 737-
53A1293, Revision 3, dated January 23, 2015, are not required by 
this AD.

(j) Exceptions to Service Bulletin Specifications

    (1) Where Boeing Alert Service Bulletin 737-53A1293, Revision 3, 
dated January 23, 2015, specifies a compliance time ``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 the Condition column of paragraph 1.E., 
``Compliance,'' of Boeing Alert Service Bulletin 737-53A1293, 
Revision 3, dated January 23, 2015, specifies a condition based on 
when an airplane has or has not been inspected, this AD bases the 
condition on whether an airplane has or has not been inspected on 
the effective date of this AD.
    (3) Where Boeing Alert Service Bulletin 737-53A1293, Revision 3, 
dated January 23, 2015, specifies to contact Boeing for repair 
instructions: Before further flight, repair using a method approved 
in accordance with the procedures specified in paragraph (k) of this 
AD.

(k) Credit for Previous Actions

    (1) This paragraph provides credit for actions required by 
paragraphs (g) and (h) of this AD, if those actions were performed 
before July 23, 2012 (the effective date of AD 2012-12-04, Amendment 
39-17083 (77 FR 36134, June 18, 2012)), using Boeing Alert Service 
Bulletin 737-53A1293, Revision 1, dated July 7, 2010, which is not 
incorporated by reference in this AD.
    (2) This paragraph provides credit for actions required by 
paragraphs (g) and (h) of this AD, if those actions were performed 
before the effective date of this AD using Boeing Alert Service 
Bulletin 737-53A1293, Revision 2, dated August 10, 2011, which was 
incorporated by reference in AD 2012-12-04, Amendment 39-17083 (77 
FR 36134, June 18, 2012).

(l) 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 (l)(1) of this AD. 
Information may be emailed to: [email protected].
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector,

[[Page 55049]]

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 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. For a repair method to be approved, the repair 
must meet the certification basis of the airplane, and the approval 
must specifically refer to this AD.
    (4) AMOCs approved for AD 2012-12-04, Amendment 39-17083 (77 FR 
36134, June 18, 2012), are approved as AMOCs for the corresponding 
provisions of paragraph (g) of this AD.

(m) Related Information

    (1) For more information about this AD, contact Wayne Lockett, 
Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle ACO, 
1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-6447; 
fax: 425-917-6590; email: [email protected].
    (2) For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Data & Services Management, 
P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone 206-544-
5000, extension 1; fax 206-766-5680; 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 September 1, 2015.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2015-22724 Filed 9-11-15; 8:45 am]
 BILLING CODE 4910-13-P



                                                                    Federal Register / Vol. 80, No. 177 / Monday, September 14, 2015 / Proposed Rules                                                 55045

                                                IV. Submission of Comments                              provides after you have successfully                  the submitting person that would result
                                                   DOE will accept comments, data, and                  uploaded your comment.                                from public disclosure; (6) when such
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                                                                                                        delivery/courier, or mail also will be                would be contrary to the public interest.
                                                DATES section at the beginning of this
                                                                                                        posted to www.regulations.gov. If you                    It is DOE’s policy that all comments
                                                document. Interested parties may
                                                                                                        do not want your personal contact                     may be included in the public docket,
                                                submit comments, data, and other
                                                                                                        information to be publicly viewable, do               without change and as received,
                                                information using any of the methods
                                                                                                        not include it in your comment or any                 including any personal information
                                                described in the ADDRESSES section at
                                                                                                        accompanying documents. Instead,                      provided in the comments (except
                                                the beginning of this document.
                                                                                                        provide your contact information in a                 information deemed to be exempt from
                                                   Submitting comments via
                                                                                                        cover letter. Include your first and last             public disclosure).
                                                www.regulations.gov. The
                                                                                                        names, email address, telephone
                                                www.regulations.gov Web page will                                                                               Issued in Washington, DC, on September 4,
                                                                                                        number, and optional mailing address.                 2015.
                                                require you to provide your name and
                                                                                                        The cover letter will not be publicly
                                                contact information. Your contact                       viewable as long as it does not include
                                                                                                                                                              Kathleen B. Hogan,
                                                information will be viewable to DOE                     any comments                                          Deputy Assistant Secretary for Energy
                                                Building Technologies staff only. Your                     Include contact information each time              Efficiency, Energy Efficiency and Renewable
                                                contact information will not be publicly                                                                      Energy.
                                                                                                        you submit comments, data, documents,
                                                viewable except for your first and last                 and other information to DOE. If you                  [FR Doc. 2015–23021 Filed 9–11–15; 8:45 am]
                                                names, organization name (if any), and                  submit via mail or hand delivery/                     BILLING CODE 6450–01–P
                                                submitter representative name (if any).                 courier, please provide all items on a
                                                If your comment is not processed                        CD, if feasible, in which case it is not
                                                properly because of technical                           necessary to submit printed copies. No                DEPARTMENT OF TRANSPORTATION
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                                                Any information that you do not want                    characters or any form of encryption                  Company Airplanes
                                                to be publicly viewable should not be                   and, if possible, they should carry the
                                                included in your comment, nor in any                    electronic signature of the author.                   AGENCY: Federal Aviation
                                                document attached to your comment.                         Confidential Business Information.                 Administration (FAA), DOT.
                                                Otherwise, persons viewing comments                     Pursuant to 10 CFR 1004.11, any person                ACTION: Notice of proposed rulemaking
                                                will see only first and last names,                     submitting information that he or she                 (NPRM).
                                                organization names, correspondence                      believes to be confidential and exempt
                                                containing comments, and any                            by law from public disclosure should                  SUMMARY:   We propose to supersede
                                                documents submitted with the                            submit via email, postal mail, or hand                Airworthiness Directive (AD) 2012–12–
                                                comments.                                               delivery/courier two well-marked                      04, which applies to certain The Boeing
                                                   Do not submit to www.regulations.gov                 copies: One copy of the document                      Company Model 737–300, –400, and
                                                information for which disclosure is                     marked ‘‘confidential’’ including all the             –500 series airplanes. AD 2012–12–04
                                                restricted by statute, such as trade                    information believed to be confidential,              currently requires repetitive external
                                                secrets and commercial or financial                     and one copy of the document marked                   detailed inspections and nondestructive
                                                information (hereinafter referred to as                 ‘‘non-confidential’’ with the information             inspections to detect cracks in the
                                                Confidential Business Information                       believed to be confidential deleted.                  fuselage skin along the chem-mill steps
                                                (CBI)). Comments submitted through                      Submit these documents via email or on                at stringers S–1 and S–2R, between
                                                www.regulations.gov cannot be claimed                   a CD, if feasible. DOE will make its own              station (STA) 400 and STA 460, and
                                                as CBI. Comments received through the                   determination about the confidential                  repair if necessary. Since we issued AD
                                                Web site will waive any CBI claims for                  status of the information and treat it                2012–12–04, we have determined that,
                                                the information submitted. For                          according to its determination.                       for certain airplanes, the skin pockets
                                                information on submitting CBI, see the                     Factors of interest to DOE when                    adjacent to the Air Traffic Control (ATC)
                                                Confidential Business Information                       evaluating requests to treat submitted                antenna are susceptible to widespread
                                                section below.                                          information as confidential include: (1)              fatigue damage. This proposed AD
                                                   DOE processes submissions made                       A description of the items; (2) whether               would require a preventive modification
                                                through www.regulations.gov before                      and why such items are customarily                    of the fuselage skin at crown stringers
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                                                posting. Normally, comments will be                     treated as confidential within the                    S–1 and S–2R. This proposed AD would
                                                posted within a few days of being                       industry; (3) whether the information is              reduce inspection thresholds and
                                                submitted. However, if large volumes of                 generally known by or available from                  repetitive intervals for certain airplanes.
                                                comments are being processed                            other sources; (4) whether the                        We are proposing this AD to detect and
                                                simultaneously, your comment may not                    information has previously been made                  correct fatigue cracking of the fuselage
                                                be viewable for up to several weeks.                    available to others without obligation                skin panels at the chem-mill steps,
                                                Please keep the comment tracking                        concerning its confidentiality; (5) an                which could result in sudden fracture
                                                number that www.regulations.gov                         explanation of the competitive injury to              and failure of the fuselage skin panels,


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                                                55046               Federal Register / Vol. 80, No. 177 / Monday, September 14, 2015 / Proposed Rules

                                                and consequent rapid decompression of                   Comments Invited                                      multiple elements such as adjacent
                                                the airplane.                                             We invite you to send any written                   frames or stringers. Multiple-site-
                                                DATES: We must receive comments on                      relevant data, views, or arguments about              damage and multiple-element-damage
                                                this proposed AD by October 29, 2015.                   this proposed AD. Send your comments                  cracks are typically too small initially to
                                                                                                        to an address listed under the                        be reliably detected with normal
                                                ADDRESSES: You may send comments,                                                                             inspection methods. Without
                                                using the procedures found in 14 CFR                    ADDRESSES section. Include ‘‘Docket No.
                                                                                                                                                              intervention, these cracks will grow,
                                                11.43 and 11.45, by any of the following                FAA–2015–3628; Directorate Identifier
                                                                                                                                                              and eventually compromise the
                                                methods:                                                2015–NM–025–AD’’ at the beginning of
                                                                                                                                                              structural integrity of the airplane, in a
                                                   • Federal eRulemaking Portal: Go to                  your comments. We specifically invite
                                                                                                                                                              condition known as widespread fatigue
                                                http://www.regulations.gov. Follow the                  comments on the overall regulatory,
                                                                                                                                                              damage (WFD). As an airplane ages,
                                                instructions for submitting comments.                   economic, environmental, and energy
                                                                                                                                                              WFD will likely occur, and will
                                                                                                        aspects of this proposed AD. We will
                                                   • Fax: 202–493–2251.                                                                                       certainly occur if the airplane is
                                                                                                        consider all comments received by the
                                                   • Mail: U.S. Department of                           closing date and may amend this
                                                                                                                                                              operated long enough without any
                                                Transportation, Docket Operations, M–                                                                         intervention.
                                                                                                        proposed AD because of those                             The FAA’s WFD final rule (75 FR
                                                30, West Building Ground Floor, Room                    comments.
                                                W12–140, 1200 New Jersey Avenue SE.,                                                                          69746, November 15, 2010) became
                                                                                                          We will post all comments we                        effective on January 14, 2011. The WFD
                                                Washington, DC 20590.                                   receive, without change, to http://
                                                   • Hand Delivery: Deliver to Mail                                                                           rule requires certain actions to prevent
                                                                                                        www.regulations.gov, including any                    structural failure due to WFD
                                                address above between 9 a.m. and 5                      personal information you provide. We                  throughout the operational life of
                                                p.m., Monday through Friday, except                     will also post a report summarizing each              certain existing transport category
                                                Federal holidays.                                       substantive verbal contact we receive                 airplanes and all of these airplanes that
                                                   For service information identified in                about this proposed AD.                               will be certificated in the future. For
                                                this proposed AD, contact Boeing                                                                              existing and future airplanes subject to
                                                Commercial Airplanes, Attention: Data                   Discussion
                                                                                                                                                              the WFD rule, the rule requires that
                                                & Services Management, P.O. Box 3707,                      On May 31, 2012, we issued AD                      DAHs establish a limit of validity (LOV)
                                                MC 2H–65, Seattle, WA 98124–2207;                       2012–12–04, Amendment 39–17083 (77                    of the engineering data that support the
                                                telephone 206–544–5000, extension 1;                    FR 36134, June 18, 2012), for certain                 structural maintenance program.
                                                fax 206–766–5680; Internet https://                     The Boeing Company Model 737–300,                     Operators affected by the WFD rule may
                                                www.myboeingfleet.com. You may view                     –400, and –500 series airplanes. AD                   not fly an airplane beyond its LOV,
                                                this referenced service information at                  2012–12–04 requires repetitive external               unless an extended LOV is approved.
                                                the FAA, Transport Airplane                             detailed inspections and nondestructive                  The WFD rule (75 FR 69746,
                                                Directorate, 1601 Lind Avenue SW.,                      inspections to detect cracks in the                   November 15, 2010) does not require
                                                Renton, WA. For information on the                      fuselage skin along the chem-mill steps               identifying and developing maintenance
                                                availability of this material at the FAA,               at stringers S–1 and S–2R, between                    actions if the DAHs can show that such
                                                call 425–227–1221. It is also available                 station (STA) 400 and STA 460, and                    actions are not necessary to prevent
                                                on the Internet at http://                              repair if necessary. AD 2012–12–04                    WFD before the airplane reaches the
                                                www.regulations.gov by searching for                    resulted from reports of crack findings               LOV. Many LOVs, however, do depend
                                                and locating Docket No. FAA–2015–                       of the fuselage skin at the chem-mill                 on accomplishment of future
                                                3628.                                                   steps. We issued AD 2012–12–04 to                     maintenance actions. As stated in the
                                                                                                        detect and correct fatigue cracking of the            WFD rule, any maintenance actions
                                                Examining the AD Docket
                                                                                                        fuselage skin panels at the chem-mill                 necessary to reach the LOV will be
                                                   You may examine the AD docket on                     steps, which could result in sudden                   mandated by airworthiness directives
                                                the Internet at http://                                 fracture and failure of the fuselage skin             through separate rulemaking actions.
                                                www.regulations.gov by searching for                    panels, and consequent rapid                             In the context of WFD, this action is
                                                and locating Docket No. FAA–2015–                       decompression of the airplane.                        necessary to enable DAHs to propose
                                                3628; or in person at the Docket                                                                              LOVs that allow operators the longest
                                                                                                        Widespread Fatigue Damage
                                                Management Facility between 9 a.m.                                                                            operational lives for their airplanes, and
                                                and 5 p.m., Monday through Friday,                         Structural fatigue damage is                       still ensure that WFD will not occur.
                                                except Federal holidays. The AD docket                  progressive. It begins as minute cracks,              This approach allows for an
                                                contains this proposed AD, the                          and those cracks grow under the action                implementation strategy that provides
                                                regulatory evaluation, any comments                     of repeated stresses. This can happen                 flexibility to DAHs in determining the
                                                received, and other information. The                    because of normal operational                         timing of service information
                                                street address for the Docket Office                    conditions and design attributes, or                  development (with FAA approval),
                                                (phone: 800–647–5527) is in the                         because of isolated situations or                     while providing operators with certainty
                                                ADDRESSES section. Comments will be                     incidents such as material defects, poor              regarding the LOV applicable to their
                                                available in the AD docket shortly after                fabrication quality, or corrosion pits,               airplanes.
                                                receipt.                                                dings, or scratches. Fatigue damage can
                                                                                                        occur locally, in small areas or                      Actions Since AD 2012–12–04,
                                                FOR FURTHER INFORMATION CONTACT:                                                                              Amendment 39–17083 (77 FR 36134,
                                                                                                        structural design details, or globally.
                                                Wayne Lockett, Aerospace Engineer,                                                                            June 18, 2012), Was Issued
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                                                                                                        Global fatigue damage is general
                                                Airframe Branch, ANM–120S, FAA,
                                                                                                        degradation of large areas of structure                  The preamble to AD 2012–12–04,
                                                Seattle Aircraft Certification Office,
                                                                                                        with similar structural details and stress            Amendment 39–17083 (77 FR 36134,
                                                1601 Lind Avenue SW., Renton, WA
                                                                                                        levels. Multiple-site damage is global                June 18, 2012), specified that we
                                                98057–3356; phone: 425–917–6447; fax:
                                                                                                        damage that occurs in a large structural              considered the requirements ‘‘interim
                                                425–917–6590; email: wayne.lockett@
                                                                                                        element such as a single rivet line of a              action.’’ AD 2012–12–04 explained that
                                                faa.gov.
                                                                                                        lap splice joining two large skin panels.             we might consider further rulemaking if
                                                SUPPLEMENTARY INFORMATION:                              Global damage can also occur in                       final action is later identified. We now


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                                                                        Federal Register / Vol. 80, No. 177 / Monday, September 14, 2015 / Proposed Rules                                                          55047

                                                have determined that it is necessary to                    Proposed AD Requirements                                    AD for addressing WFD was established
                                                initiate further rulemaking to require                        Although this proposed AD does not                       to ensure that discrepant structure is
                                                modification of the fuselage skin at                       explicitly restate the requirements of AD                   modified before WFD develops in
                                                crown stringers S–1 and S–2R, and to                       2012–12–04, Amendment 39–17083 (77                          airplanes. Standard inspection
                                                reduce inspection thresholds and                           FR 36134, June 18, 2012), this proposed                     techniques cannot be relied on to detect
                                                repetitive intervals for certain airplanes.                AD would retain all of the requirements.                    WFD before it becomes a hazard to
                                                                                                           Those requirements are referenced in                        flight. We will not grant any extensions
                                                Related Service Information Under 1                                                                                    of the compliance time to complete any
                                                                                                           the service information identified
                                                CFR Part 51                                                previously, which, in turn, is referenced                   AD-mandated service bulletin related to
                                                                                                           in this proposed AD. This proposed AD                       WFD without extensive new data that
                                                  We reviewed Boeing Alert Service
                                                                                                           would require accomplishing the                             would substantiate and clearly warrant
                                                Bulletin 737–53A1293, Revision 3,
                                                                                                           actions specified in the service                            such an extension.
                                                dated January 23, 2015. The service
                                                                                                           information described previously,
                                                information describes procedures for                                                                                   Difference Between This Proposed AD
                                                                                                           except as discussed under ‘‘Difference
                                                repetitive external detailed inspections                                                                               and the Service Bulletin
                                                                                                           Between This Proposed AD and the
                                                and non-destructive inspections to                         Service Bulletin.’’ For information on
                                                detect cracks in the fuselage skin along                                                                                  Although Boeing Alert Service
                                                                                                           the procedures and compliance times,                        Bulletin 737–53A1293, Revision 3,
                                                the chem-mill steps at stringers S–1 and                   see this service information at http://
                                                S–2R, between STA 400 and STA 460,                                                                                     dated January 23, 2015, specifies that
                                                                                                           www.regulations.gov by searching for                        operators may contact the manufacturer
                                                and repair of any cracking. The service                    and locating Docket No. FAA–2015–                           for disposition of certain repair
                                                information also describes procedures                      3628.                                                       conditions, this proposed AD would
                                                for a modification of the chem-milled                         The phrase ‘‘related investigative                       require repairing those conditions in
                                                steps at the locations identified,                         actions’’ is used in this proposed AD.                      one of the following ways:
                                                including related investigative actions                    ‘‘Related investigative actions’’ are
                                                and corrective actions. This service                       follow-on actions that (1) are related to                      • In accordance with a method that
                                                information is reasonably available                        the primary action, and (2) further                         we approve; or
                                                because the interested parties have                        investigate the nature of any condition                        • Using data that meet the
                                                access to it through their normal course                   found. Related investigative actions in                     certification basis of the airplane, and
                                                of business or by the means identified                     an AD could include, for example,                           that have been approved by the Boeing
                                                in the ADDRESSES section of this NPRM.                     inspections.                                                Commercial Airplanes Organization
                                                                                                              The phrase ‘‘corrective actions’’ is                     Designation Authorization (ODA) whom
                                                FAA’s Determination                                        used in this proposed AD. ‘‘Corrective                      we have authorized to make those
                                                                                                           actions’’ are actions that correct or                       findings.
                                                  We are proposing this AD because we                      address any condition found. Corrective
                                                evaluated all the relevant information                     actions in an AD could include, for                         Costs of Compliance
                                                and determined the unsafe condition                        example, repairs.
                                                described previously is likely to exist or                                                                                We estimate that this proposed AD
                                                develop in other products of the same                      Explanation of Compliance Time                              affects 186 airplanes of U.S. registry.
                                                type design.                                                 The compliance time for the                                  We estimate the following costs to
                                                                                                           modification specified in this proposed                     comply with this proposed AD:

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

                                                Retained inspections from AD             Between 7 and 15 work-hours                      $0    Between $595 and $1,275 per                   Between $110,670 and
                                                  2012–12–04, Amendment                    × $85 per hour, depending                              inspection cycle.                             $237,150 per inspection
                                                  39–17083 (77 FR 36134,                   on airplane configuration =                                                                          cycle.
                                                  June 18, 2012).                          between $595 and $1,275
                                                                                           per inspection cycle.
                                                New modification .....................   236 work-hours × $85 per                         (1)   $20,060 ...................................   $3,731,160.
                                                                                           hour = $20,060.
                                                  1 We currently have no specific cost estimates associated with the parts necessary for the proposed modification. We cannot determine the
                                                cost of the materials because the modification parts must be sized at the time the modification is installed, taking into account any existing re-
                                                pairs in the area.


                                                  We have received no definitive data                      detail the scope of the Agency’s                            because it addresses an unsafe condition
                                                that would enable us to provide a cost                     authority.                                                  that is likely to exist or develop on
                                                estimate for the on-condition actions                         We are issuing this rulemaking under                     products identified in this rulemaking
                                                specified in this proposed AD.                             the authority described in Subtitle VII,                    action.
                                                                                                           Part A, Subpart III, Section 44701,
                                                Authority for This Rulemaking                                                                                          Regulatory Findings
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                                                                                                           ‘‘General requirements.’’ Under that
                                                                                                           section, Congress charges the FAA with                        We have determined that this
                                                  Title 49 of the United States Code                       promoting safe flight of civil aircraft in                  proposed AD would not have federalism
                                                specifies the FAA’s authority to issue                     air commerce by prescribing regulations                     implications under Executive Order
                                                rules on aviation safety. Subtitle I,                      for practices, methods, and procedures                      13132. This proposed AD would not
                                                Section 106, describes the authority of                    the Administrator finds necessary for                       have a substantial direct effect on the
                                                the FAA Administrator. Subtitle VII,                       safety in air commerce. This regulation                     States, on the relationship between the
                                                Aviation Programs, describes in more                       is within the scope of that authority                       national Government and the States, or


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                                                55048               Federal Register / Vol. 80, No. 177 / Monday, September 14, 2015 / Proposed Rules

                                                on the distribution of power and                        airplanes, the skin pockets adjacent to the Air       specified in tables 4 and 6 of paragraph 1.E.,
                                                responsibilities among the various                      Traffic Control (ATC) antenna are susceptible         ‘‘Compliance,’’ of Boeing Alert Service
                                                levels of government.                                   to widespread fatigue damage. We are issuing          Bulletin 737–53A1293, Revision 3, dated
                                                                                                        this AD to detect and correct fatigue cracking        January 23, 2015, may be used in support of
                                                  For the reasons discussed above, I
                                                                                                        of the fuselage skin panels at the chem-mill          compliance with section 121.1109(c)(2) or
                                                certify that the proposed regulation:                   steps, which could result in sudden fracture          129.109(c)(2) of the Federal Aviation
                                                  (1) Is not a ‘‘significant regulatory                 and failure of the fuselage skin panels, and          Regulations (14 CFR 121.1109(c)(2) or 14 CFR
                                                action’’ under Executive Order 12866,                   consequent rapid decompression of the                 129.109(c)(2)). The corresponding actions
                                                  (2) Is not a ‘‘significant rule’’ under               airplane.                                             specified in the Accomplishment
                                                the DOT Regulatory Policies and                         (f) Compliance
                                                                                                                                                              Instructions of Boeing Alert Service Bulletin
                                                Procedures (44 FR 11034, February 26,                                                                         737–53A1293, Revision 3, dated January 23,
                                                1979),                                                     Comply with this AD within the                     2015, are not required by this AD.
                                                                                                        compliance times specified, unless already
                                                  (3) Will not affect intrastate aviation               done.                                                 (j) Exceptions to Service Bulletin
                                                in Alaska, and                                                                                                Specifications
                                                  (4) Will not have a significant                       (g) Inspections
                                                                                                                                                                 (1) Where Boeing Alert Service Bulletin
                                                economic impact, positive or negative,                     At the applicable time specified in tables
                                                                                                                                                              737–53A1293, Revision 3, dated January 23,
                                                on a substantial number of small entities               1, 2, 3, and 5 of paragraph 1.E.,
                                                                                                                                                              2015, specifies a compliance time ‘‘after the
                                                under the criteria of the Regulatory                    ‘‘Compliance,’’ of Boeing Alert Service
                                                                                                        Bulletin 737–53A1293, Revision 3, dated               Revision 3 date of this service bulletin,’’ this
                                                Flexibility Act.                                                                                              AD requires compliance within the specified
                                                                                                        January 23, 2015, except as required by
                                                                                                        paragraphs (j)(1) and (j)(2) of this AD: Do the       compliance time after the effective date of
                                                List of Subjects in 14 CFR Part 39
                                                                                                        actions specified in paragraphs (g)(1) and            this AD.
                                                  Air transportation, Aircraft, Aviation                (g)(2) of this AD, in accordance with the                (2) Where the Condition column of
                                                safety, Incorporation by reference,                     Accomplishment Instructions of Boeing Alert           paragraph 1.E., ‘‘Compliance,’’ of Boeing
                                                Safety.                                                 Service Bulletin 737–53A1293, Revision 3,             Alert Service Bulletin 737–53A1293,
                                                                                                        dated January 23, 2015, except as required by         Revision 3, dated January 23, 2015, specifies
                                                The Proposed Amendment                                  paragraph (j)(3) of this AD. Repeat the               a condition based on when an airplane has
                                                  Accordingly, under the authority                      applicable inspections thereafter at the              or has not been inspected, this AD bases the
                                                                                                        applicable times specified in paragraph 1.E.,         condition on whether an airplane has or has
                                                delegated to me by the Administrator,                                                                         not been inspected on the effective date of
                                                the FAA proposes to amend 14 CFR part                   ‘‘Compliance,’’ of Boeing Alert Service
                                                                                                        Bulletin 737–53A1293, Revision 3, dated               this AD.
                                                39 as follows:                                          January 23, 2015.                                        (3) Where Boeing Alert Service Bulletin
                                                                                                           (1) Do an external detailed inspection for         737–53A1293, Revision 3, dated January 23,
                                                PART 39—AIRWORTHINESS                                   cracking of the fuselage skin chem-mill steps.        2015, specifies to contact Boeing for repair
                                                DIRECTIVES                                                 (2) Do an external non-destructive                 instructions: Before further flight, repair
                                                                                                        (medium frequency eddy current, magneto               using a method approved in accordance with
                                                ■ 1. The authority citation for part 39                 optical imaging, C-Scan, or ultrasonic phased         the procedures specified in paragraph (k) of
                                                continues to read as follows:                           array) inspection for cracking of the fuselage        this AD.
                                                    Authority: 49 U.S.C. 106(g), 40113, 44701.          skin chem-mill steps.                                 (k) Credit for Previous Actions
                                                                                                        (h) Preventive Modification or Repair                   (1) This paragraph provides credit for
                                                § 39.13   [Amended]
                                                                                                           If any cracking is found during any                actions required by paragraphs (g) and (h) of
                                                ■ 2. The FAA amends § 39.13 by                                                                                this AD, if those actions were performed
                                                                                                        inspection required by paragraph (g) of this
                                                removing Airworthiness Directive (AD)                   AD, do the applicable actions specified in            before July 23, 2012 (the effective date of AD
                                                2012–12–04, Amendment 39–17083 (77                      paragraph (h)(1) or (h)(2) of this AD.                2012–12–04, Amendment 39–17083 (77 FR
                                                FR 36134, June 18, 2012), and adding                       (1) Repair before further flight in                36134, June 18, 2012)), using Boeing Alert
                                                the following new AD:                                   accordance with Part 2 of the                         Service Bulletin 737–53A1293, Revision 1,
                                                                                                        Accomplishment Instructions of Boeing Alert           dated July 7, 2010, which is not incorporated
                                                The Boeing Company: Docket No. FAA–
                                                                                                        Service Bulletin 737–53A1293, Revision 3,             by reference in this AD.
                                                    2015–3628; Directorate Identifier 2015–
                                                                                                        dated January 23, 2015.                                 (2) This paragraph provides credit for
                                                    NM–025–AD.
                                                                                                           (2) At the applicable time specified in            actions required by paragraphs (g) and (h) of
                                                (a) Comments Due Date                                   tables 1, 2, 3, and 5 of paragraph 1.E.,              this AD, if those actions were performed
                                                  The FAA must receive comments on this                 ‘‘Compliance,’’ of Boeing Alert Service               before the effective date of this AD using
                                                AD action by October 29, 2015.                          Bulletin 737–53A1293, Revision 3, dated               Boeing Alert Service Bulletin 737–53A1293,
                                                                                                        January 23, 2015, except as required by               Revision 2, dated August 10, 2011, which
                                                (b) Affected ADs                                        paragraphs (j)(1) and (j)(2) of this AD: Do a         was incorporated by reference in AD 2012–
                                                  This AD replaces AD 2012–12–04,                       preventive modification of the fuselage skin          12–04, Amendment 39–17083 (77 FR 36134,
                                                Amendment 39–17083 (77 FR 36134, June                   at crown stringers S–1 and S–2R, including            June 18, 2012).
                                                18, 2012).                                              all applicable related investigative actions in
                                                                                                        accordance with Part 9 of the                         (l) Alternative Methods of Compliance
                                                (c) Applicability                                       Accomplishment Instructions of Boeing Alert           (AMOCs)
                                                   This AD applies to The Boeing Company                Service Bulletin 737–53A1293, Revision 3,                (1) The Manager, Los Angeles Aircraft
                                                Model 737–300, –400, and –500 series                    dated January 23, 2015. Do all applicable             Certification Office (ACO), FAA, has the
                                                airplanes, certificated in any category, as             related investigative actions concurrently            authority to approve AMOCs for this AD, if
                                                identified in Boeing Alert Service Bulletin             with the modification.                                requested using the procedures found in 14
                                                737–53A1293, Revision 3, dated January 23,                                                                    CFR 39.19. In accordance with 14 CFR 39.19,
                                                                                                        (i) Post-Repair Inspections/Post-Modification
                                                2015.                                                                                                         send your request to your principal inspector
                                                                                                        Inspections
                                                                                                                                                              or local Flight Standards District Office, as
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                                                (d) Subject                                                The post-repair/post-modification                  appropriate. If sending information directly
                                                  Air Transport Association (ATA) of                    inspections specified in tables 4 and 6 of            to the manager of the ACO, send it to the
                                                America Code 53, Fuselage.                              paragraph 1.E., ‘‘Compliance,’’ of Boeing             attention of the person identified in
                                                                                                        Alert Service Bulletin 737–53A1293,                   paragraph (l)(1) of this AD. Information may
                                                (e) Unsafe Condition                                    Revision 3, dated January 23, 2015, are not           be emailed to: 9-ANM-LAACO-AMOC-
                                                   This AD was prompted by reports of cracks            required by this AD.                                  Requests@faa.gov.
                                                found on the fuselage skin at the chem-mill                Note 1 to paragraph (h) of this AD: The               (2) Before using any approved AMOC,
                                                steps, and the determination that, for certain          post-repair/post-modification inspections             notify your appropriate principal inspector,



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                                                                    Federal Register / Vol. 80, No. 177 / Monday, September 14, 2015 / Proposed Rules                                          55049

                                                or lacking a principal inspector, the manager           ADDRESSES:   Send comments on this                    by submitting such written data, views,
                                                of the local flight standards district office/          proposal to the U.S. Department of                    or arguments as they may desire.
                                                certificate holding district office.                    Transportation, Docket Operations, M–                 Comments that provide the factual basis
                                                  (3) An AMOC that provides an acceptable
                                                level of safety may be used for any repair
                                                                                                        30, 1200 New Jersey Avenue SE., West                  supporting the views and suggestions
                                                required by this AD if it is approved by the            Building Ground Floor, Room W12–140,                  presented are particularly helpful in
                                                Boeing Commercial Airplanes Organization                Washington, DC 20590–0001; telephone:                 developing reasoned regulatory
                                                Designation Authorization (ODA) that has                (202) 366–9826. You must identify FAA                 decisions on the proposal. Comments
                                                been authorized by the Manager, Los Angeles             Docket No. FAA–2015–3361 and                          are specifically invited on the overall
                                                ACO, to make those findings. For a repair               Airspace Docket No. 15–AEA–4 at the                   regulatory, aeronautical, economic,
                                                method to be approved, the repair must meet             beginning of your comments. You may                   environmental, and energy-related
                                                the certification basis of the airplane, and the
                                                                                                        also submit comments through the                      aspects of the proposal.
                                                approval must specifically refer to this AD.
                                                  (4) AMOCs approved for AD 2012–12–04,                 Internet at http://www.regulations.gov.                 Communications should identify both
                                                Amendment 39–17083 (77 FR 36134, June                      FAA Order 7400.9Y, Airspace                        docket numbers (FAA Docket No. FAA–
                                                18, 2012), are approved as AMOCs for the                Designations and Reporting Points, and                2015–3361 and Airspace Docket No. 15–
                                                corresponding provisions of paragraph (g) of            subsequent amendments can be viewed                   AEA–4) and be submitted in triplicate to
                                                this AD.                                                online at http://www.faa.gov/air_traffic/             the Docket Management Facility (see
                                                (m) Related Information                                 publications/. For further information,               ADDRESSES section for address and
                                                   (1) For more information about this AD,
                                                                                                        you can contact the Airspace Policy and               phone number). You may also submit
                                                contact Wayne Lockett, Aerospace Engineer,              Regulations Group, Federal Aviation                   comments through the Internet at
                                                Airframe Branch, ANM–120S, FAA, Seattle                 Administration, 800 Independence                      http://www.regulations.gov.
                                                ACO, 1601 Lind Avenue SW., Renton, WA                   Avenue, SW., Washington, DC, 20591;                     Commenters wishing the FAA to
                                                98057–3356; phone: 425–917–6447; fax: 425–              telephone: 202–267–8783. The Order is                 acknowledge receipt of their comments
                                                917–6590; email: wayne.lockett@faa.gov.                 also available for inspection at the                  on this action must submit with those
                                                   (2) For service information identified in            National Archives and Records                         comments a self-addressed, stamped
                                                this AD, contact Boeing Commercial
                                                                                                        Administration (NARA). For                            postcard on which the following
                                                Airplanes, Attention: Data & Services
                                                Management, P.O. Box 3707, MC 2H–65,                    information on the availability of this               statement is made: ‘‘Comments to FAA
                                                Seattle, WA 98124–2207; telephone 206–                  material at NARA, call 202–741–6030,                  Docket No. FAA–2015–3361 and
                                                544–5000, extension 1; fax 206–766–5680;                or go to http://www.archives.gov/                     Airspace Docket No. 15–AEA–4.’’ The
                                                Internet https://www.myboeingfleet.com. You             federal_register/code_of_federal-                     postcard will be date/time stamped and
                                                may view this referenced service information            regulations/ibr_locations.html.                       returned to the commenter.
                                                at the FAA, Transport Airplane Directorate,                FAA Order 7400.9, Airspace                           All communications received on or
                                                1601 Lind Avenue SW., Renton, WA. For                   Designations and Reporting Points, is
                                                information on the availability of this                                                                       before the specified comment closing
                                                material at the FAA, call 425–227–1221.                 published yearly and effective on                     date will be considered before taking
                                                                                                        September 15.                                         action on the proposed rule. The
                                                  Issued in Renton, Washington, on
                                                September 1, 2015.                                      FOR FURTHER INFORMATION CONTACT: Paul                 proposal contained in this action may
                                                                                                        Gallant, Airspace Policy and                          be changed in light of comments
                                                Michael Kaszycki,
                                                                                                        Regulations Group, Office of Airspace                 received. All comments submitted will
                                                Acting Manager, Transport Airplane
                                                Directorate, Aircraft Certification Service.            Services, Federal Aviation                            be available for examination in the
                                                                                                        Administration, 800 Independence                      public docket both before and after the
                                                [FR Doc. 2015–22724 Filed 9–11–15; 8:45 am]
                                                                                                        Avenue SW., Washington, DC 20591;                     comment closing date. A report
                                                BILLING CODE 4910–13–P
                                                                                                        telephone: (202) 267–8783.                            summarizing each substantive public
                                                                                                        SUPPLEMENTARY INFORMATION:                            contact with FAA personnel concerned
                                                DEPARTMENT OF TRANSPORTATION                                                                                  with this rulemaking will be filed in the
                                                                                                        Authority for This Rulemaking                         docket.
                                                Federal Aviation Administration                            The FAA’s authority to issue rules                 Availability of NPRMs
                                                                                                        regarding aviation safety is found in
                                                14 CFR Part 71                                          Title 49 of the United States Code.                     An electronic copy of this document
                                                                                                        Subtitle I, Section 106 describes the                 may be downloaded through the
                                                [Docket No. FAA–2015–3361; Airspace                                                                           Internet at http://www.regulations.gov.
                                                Docket No. 15–AEA–4]                                    authority of the FAA Administrator.
                                                                                                        Subtitle VII, Aviation Programs,                        You may review the public docket
                                                RIN 2120–AA66                                           describes in more detail the scope of the             containing the proposal, any comments
                                                                                                        agency’s authority. This rulemaking is                received and any final disposition in
                                                Proposed Amendment of Air Traffic                       promulgated under the authority                       person in the Dockets Office (see
                                                Service (ATS) Routes; Northeast                         described in Subtitle VII, Part A,                    ADDRESSES section for address and
                                                United States                                           Subpart I, Section 40103. Under that                  phone number) between 9:00 a.m. and
                                                AGENCY: Federal Aviation                                section, the FAA is charged with                      5:00 p.m., Monday through Friday,
                                                Administration (FAA), DOT.                              prescribing regulations to assign the use             except Federal holidays. An informal
                                                ACTION: Notice of proposed rulemaking                   of the airspace necessary to ensure the               docket may also be examined during
                                                (NPRM).                                                 safety of aircraft and the efficient use of           normal business hours at the office of
                                                                                                        airspace. This regulation is within the               the Eastern Service Center, Federal
                                                SUMMARY:   This action proposes to                                                                            Aviation Administration, Room 210,
tkelley on DSK3SPTVN1PROD with PROPOSALS




                                                                                                        scope of that authority as it modifies the
                                                modify jet routes J–6, J–97, and J–222,                 air traffic service route structure in the            1701 Columbia Ave., College Park, GA,
                                                and VOR Federal airways V–196, and                      northeast United States to maintain the               30337.
                                                V–489, in the northeastern United States                efficient flow of air traffic.                          Persons interested in being placed on
                                                due to the planned decommissioning of                                                                         a mailing list for future NPRMs should
                                                the Plattsburgh, NY, VORTAC facility.                   Comments Invited                                      contact the FAA’s Office of Rulemaking,
                                                DATES: Comments must be received on                       Interested parties are invited to                   (202) 267–9677, for a copy of Advisory
                                                or before October 29, 2015.                             participate in this proposed rulemaking               Circular No. 11–2A, Notice of Proposed


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Document Created: 2018-02-26 10:15:07
Document Modified: 2018-02-26 10:15:07
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
ActionNotice of proposed rulemaking (NPRM).
DatesWe must receive comments on this proposed AD by October 29, 2015.
ContactWayne Lockett, Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-6447; fax: 425-917-6590; email: [email protected]
FR Citation80 FR 55045 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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