AD 2015-06-07

[Federal Register Volume 80, Number 60 (Monday, March 30, 2015)]
[Rules and Regulations]
[Pages 16558-16561]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2015-06753]



[[Page 16558]]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0284; Directorate Identifier 2014-NM-011-AD; 
Amendment 39-18125; AD 2015-06-07]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
The Boeing Company Model 737-100, 737-200, 737-200C, 737-300, 737-400, 
and 737-500 series airplanes. This AD was prompted by reports of 
cracking in the lower corners of the forward entry doorway and the 
upper corners of the airstairs cutout. This AD requires inspections for 
cracking of the forward entry doorway and airstairs cutout, and 
corrective actions if necessary. This AD also provides terminating 
action for the repetitive inspections. We are issuing this AD to detect 
and correct cracks in the lower corners of the forward entry door 
cutout and the upper corners of the airstairs cutout, which could 
progress and result in an inability to maintain cabin pressurization.

DATES: This AD is effective May 4, 2015.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of May 4, 2015.

ADDRESSES: 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 <a href="https://www.myboeingfleet.com">https://www.myboeingfleet.com</a>. 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 <a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for and locating Docket No. FAA-2014-
0284.

Examining the AD Docket

    You may examine the AD docket on the Internet at <a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for and locating Docket No. FAA-2014-
0284; 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 AD, the regulatory evaluation, any comments received, and 
other information. The address for the Docket Office (phone: 800-647-
5527) is Docket Management Facility, U.S. Department of Transportation, 
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 
New Jersey Avenue SE., Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Nenita Odesa, Aerospace Engineer, 
Airframe Branch, ANM-120L, FAA, Los Angeles Aircraft Certification 
Office, 3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 562-
627-5234; fax: 562-627-5210; email: <a href="/cdn-cgi/l/email-protection#573932393e23367938333224361731363679303821"><span class="__cf_email__" data-cfemail="96f8f3f8ffe2f7b8f9f2f3e5f7d6f0f7f7b8f1f9e0">[email&#160;protected]</span></a>.

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 by adding an AD that would apply to certain The Boeing Company 
Model 737-100, 737-200, 737-200C, 737-300, 737-400, and 737-500 series 
airplanes. The NPRM published in the Federal Register on May 28, 2014 
(79 FR 30500). The NPRM was prompted by reports of cracking in the 
lower corners of the forward entry doorway and the upper corners of the 
airstairs cutout. The NPRM proposed to require inspections for cracking 
of the forward entry doorway and airstairs cutout, and corrective 
actions if necessary. The NPRM also proposed to provide terminating 
action for the repetitive inspections. We are issuing this AD to detect 
and correct cracks in the lower corners of the forward entry door 
cutout and the upper corners of the airstairs cutout, which could 
progress and result in an inability to maintain cabin pressurization.

Comments

    We gave the public the opportunity to participate in developing 
this AD. The following presents the comments received on the NPRM (79 
FR 30500, May 28, 2014) and the FAA's response to each comment.

Effect of Winglets on Accomplishment of the Proposed Actions

    Aviation Partners Boeing stated that accomplishing the installation 
of winglets per supplemental type certificate (STC) ST01219SE (http://
rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/
082838ee177dbf62862576a4005cdfc0/$FILE/ST01219SE.pdf) does not affect 
the actions specified in the NPRM (79 FR 30500, May 28, 2014).
    We concur with the commenter. We have redesignated paragraph (c) of 
the proposed AD (79 FR 30500, May 28, 2014) as paragraph (c)(1) in this 
AD and added new paragraph (c)(2) to this AD to state that installation 
of STC ST01219SE (http://rgl.faa.gov/Regulatory_and_Guidance_Library/
rgstc.nsf/0/082838ee177dbf62862576a4005cdfc0/$FILE/ST01219SE.pdf) does 
not affect the ability to accomplish the actions required by this final 
rule. Therefore, for airplanes on which STC ST01219SE is installed, a 
``change in product'' alternative method of compliance (AMOC) approval 
request is not necessary to comply with the requirements of 14 CFR 
39.17.

Request to Clarify That Certain Inspections Are Not Required for Areas 
With Existing Repairs

    Southwest Airlines (SWA) requested that the NPRM (79 FR 30500, May 
28, 2014) be revised to clarify that the initial and repetitive 
inspections specified in paragraph (g)(1) of the proposed AD would not 
be required for locations that are common to existing repairs that were 
installed using the Boeing Model 737 structural repair manual (SRM) 
repairs identified in Part 3, ``Permanent Repair,'' of Paragraph 3.B., 
``Work Instructions,'' of the Accomplishment Instructions of Boeing 
Special Attention Service Bulletin 737-53-1083, Revision 4, dated 
December 18, 2013. As an alternative to this clarification, SWA 
suggested that guidance be provided on how to address the existing 
repairs since the inspections proposed in paragraph (g)(1) of the 
proposed AD cannot be accomplished in the repaired areas.
    SWA observed that the applicability blocks in Repair 12 and Repair 
13 of Boeing 737-300/400/500 SRM 53-10-01 state that the inspections 
identified in Boeing Special Attention Service Bulletin 737-53-1083, 
Revision 4, dated December 18, 2013, are not necessary for the repaired 
areas.
    We agree that the inspections required by paragraph (g)(1) of this 
AD cannot be accomplished at locations where certain repairs have been 
installed. We have added a new paragraph (g)(3) to this AD and 
redesignated the subsequent paragraph as (g)(4). Paragraph (g)(3) of 
this AD clarifies that accomplishment of a permanent repair terminates 
the repetitive inspections required by paragraph (g)(1) of this AD for 
the repaired area only.

Request for Alternative Inspection Methods

    SWA requested that the NPRM (79 FR 30500, May 28, 2014) be revised 
to

[[Page 16559]]

provide operators the option to request alternative inspection 
instructions from Boeing for areas with existing repairs that were 
approved by a Boeing Authorized Representative (AR). The inspections 
proposed in paragraph (g)(1) of the NPRM cannot be accomplished in 
areas with existing repairs.
    We do not agree to revise this AD to include a provision to provide 
operators the option to request alternative inspection instructions 
from Boeing. If there are existing repairs that were approved by a 
Boeing AR, and those existing repairs prevent accomplishment of the 
inspections required by paragraph (g)(1) of this AD, 14 CFR 39.17 of 
the Federal Aviation Regulations requires an affected operator to 
obtain an AMOC from the FAA. Upon publication of this AD, the Manager 
of the Los Angeles Aircraft Certification Office will consider granting 
AMOC authority for this AD to the Boeing Commercial Airplanes 
Organization Designation Authorization (ODA).

Request To Clarify That Inspections Are Not Required for Previously 
Repaired Areas

    Boeing requested that paragraph (g)(2) of the NPRM (79 FR 30500, 
May 28, 2014) be revised to specify that the inspections required by 
paragraph (g)(1) of the NPRM are not required for Groups 1 and 2 
airplanes that have been repaired using the service information 
identified in paragraph (g)(2)(i), (g)(2)(ii), or (g)(2)(iii) of the 
NPRM. Boeing noted that, as currently written, paragraph (g)(2) of the 
NPRM would not require inspection of the unrepaired lower entry door 
and upper airstair corners and would contradict the inspections in the 
service information, which could lead to an unsafe condition. Boeing 
also pointed out that the inspection zones specified in the following 
service information do not include the repaired area(s).
    <bullet> Boeing Service Bulletin 737-531083, Revision 1, dated 
October 25, 1985.
    <bullet> Boeing Service Bulletin 737-531083, Revision 2, dated 
March 17, 1988.
    <bullet> Boeing Service Bulletin 737-531083, Revision 3, dated 
December 7, 1989.
    For the reasons provided by the commenter we agree to revise 
paragraph (g)(2) of this AD to specify that ``[T]he inspections 
required by paragraph (g)(1) of this AD are not required in the 
repaired area.''

Request To Specify Inspection Locations

    Boeing requested that paragraph (g)(1) of the NPRM (79 FR 30500, 
May 28, 2014) be revised to specify the locations that need to be 
inspected. The commenter stated that, as currently written, the 
inspection methods are specified but not the inspection locations. 
Boeing Special Attention Service Bulletin 737-53-1083, Revision 4, 
dated December 18, 2013, provides different inspection methods based on 
the location of the inspection. Boeing suggested that the revision to 
paragraph (g)(1) state ``[D]o the inspections specified in paragraphs 
(g)(1)(i), (g)(1)(ii), (g)(1)(iii), and (g)(1)(iv) of this AD and in 
accordance with Part 1 of the Accomplishment Instructions of Boeing 
Special Attention Service Bulletin 737-53-1083, Revision 4. . . .''
    We do not agree it is necessary to specify inspection locations 
because paragraph (g)(1) of this AD already requires operators to do 
the inspections in accordance with Part 1 of the Accomplishment 
Instructions of Boeing Special Attention Service Bulletin 737-53-1083, 
Revision 5, dated July 22, 2014. These accomplishment instructions 
include the specific inspection methods and the inspection locations. 
No change has been made to this AD in this regard.

Request To Refer to Revised Service Information

    ANA and Europe Airpost requested that the material in Boeing 
Information Notice 737-53-1083 R04 IN 03 to Boeing Alert Service 
Bulletin 737-53-1083 be included in the final rule. The commenters 
noted that, based on the material in Boeing Information Notice 737-53-
1083 R04 IN 03 to Boeing Service Bulletin 737-53-1083, the inspection 
of the skin doubler required by paragraph (g)(1)(iii) of the NPRM (79 
FR 30500, May 28, 2014) would no longer be applicable to Group 4 
airplanes. The commenters explained that Boeing Special Attention 
Service Bulletin 737-53-1083, Revision 5, dated July 22, 2014, would 
incorporate the material in Boeing Information Notice 737-53-1083 R04 
IN 03. The commenters pointed out that operators might have to request 
AMOCs from the FAA if the final rule did not include this material and 
was issued prior to Boeing's release of Boeing Special Attention 
Service Bulletin 737-53-1083, Revision 5, dated July 22, 2014.
    We agree that the material in Information Notice 737-53-1083 R04 IN 
03 to Boeing Service Bulletin 737-53-1083 is incorporated in Boeing 
Special Attention Service Bulletin 737-53-1083, Revision 5, dated July 
22, 2014. Since the NPRM (79 FR 30500, May 28, 2014) was published, 
Boeing has issued and we have reviewed Special Attention Service 
Bulletin 737-53-1083, Revision 5, dated July 22, 2014. We have revised 
this AD to include Boeing Special Attention Service Bulletin 737-53-
1083, Revision 5, dated July 22, 2014, as an additional source of 
service information. We have also included a new paragraph (k) in this 
AD, and redesignated the subsequent paragraphs accordingly, to provide 
credit for accomplishment of certain actions before the effective date 
of this AD using Boeing Special Attention Service Bulletin 737-53-1083, 
Revision 4, dated December 18, 2013.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
this AD with the changes described previously and minor editorial 
changes. We have determined that these minor changes:
    <bullet> [Agr]re consistent with the intent that was proposed in 
the NPRM (79 FR 30500, May 28, 2014) for correcting the unsafe 
condition; and
    <bullet> Do not add any additional burden upon the public than was 
already proposed in the NPRM (79 FR 30500, May 28, 2014).
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of this AD.

Related Service Information Under 1 CFR Part 51

    We reviewed Boeing Special Attention Service Bulletin 737-53-1083, 
Revision 5, dated July 22, 2014. The service information describes 
procedures for inspection of the forward entry doorway and airstairs 
doorway, modification, and repair. This service information is 
reasonably available; see ADDRESSES for ways to access this service 
information.

Costs of Compliance

    We estimate that this AD affects 132 airplanes of U.S. registry.
    We estimate the following costs to comply with this AD:

[[Page 16560]]



                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                Cost on U.S.
              Action                     Labor cost       Parts cost    Cost per product          operators
----------------------------------------------------------------------------------------------------------------
Inspection (Groups 1 through 4      9 work-hours x $85           $0   $765 per inspection   $100,980 per
 airplanes). \1\                     per hour = $765 per               cycle.                inspection cycle.
                                     inspection cycle.
----------------------------------------------------------------------------------------------------------------
\1\ We have received no definitive data that would enable us to provide cost estimates for the inspection of
  Group 5 airplanes.


                                                 Optional Costs
----------------------------------------------------------------------------------------------------------------
               Action                         Labor cost                Parts cost          Cost per  product
----------------------------------------------------------------------------------------------------------------
Preventive modification............  Up to 2 work-hours x $85     Up to $3,927.........  Up to $4,097.
                                      per hour = $170.
----------------------------------------------------------------------------------------------------------------

    We estimate the following costs to do any necessary repair that 
would be required based on the results of the inspections. We have no 
way of determining the number of aircraft that might need this repair:

                                               On-Condition Costs
----------------------------------------------------------------------------------------------------------------
               Action                         Labor cost                Parts cost          Cost per  product
----------------------------------------------------------------------------------------------------------------
Repair.............................  25 work-hours x $85 per      Up to $5,342.........  Up to $7,467.
                                      hour = $2,125.
----------------------------------------------------------------------------------------------------------------

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

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

List of Subjects in 14 CFR Part 39

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

Adoption of the Amendment

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

PART 39--AIRWORTHINESS DIRECTIVES

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

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


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive (AD):

2015-06-07 The Boeing Company: Amendment 39-18125; Docket No. FAA-
2014-0284; Directorate Identifier 2014-NM-011-AD.

(a) Effective Date

    This AD is effective May 4, 2015.

(b) Affected ADs

    None.

(c) Applicability

    (1) This AD applies to The Boeing Company Model 737-100, -200, -
200C, -300, -400, and -500 series airplanes, certificated in any 
category, as identified in Boeing Special Attention Service Bulletin 
737-53-1083, Revision 5, dated July 22, 2014.
    (2) Installation of Supplemental Type Certificate (STC) 
ST01219SE (http://rgl.faa.gov/Regulatory_and_Guidance_Library/
rgstc.nsf/0/082838ee177dbf62862576a4005cdfc0/$FILE/ST01219SE.pdf) 
does not affect the ability to accomplish the actions required by 
this AD. For airplanes on which STC ST01219SE (http://rgl.faa.gov/
Regulatory_and_Guidance_Library/rgstc.nsf/0/
ebd1cec7b301293e86257cb30045557a/$FILE/ST01219SE.pdf) is installed, 
therefore, a ``change in product'' alternative method of compliance 
(AMOC) approval request is not necessary to comply with the 
requirements of 14 CFR 39.17.

(d) Subject

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

(e) Unsafe Condition

    This AD was prompted by reports of cracking in the lower corners 
of the forward entry doorway and the upper corners of the airstairs 
cutout. We are issuing this AD to detect and correct cracks in the 
lower corners of the forward entry door cutout and the upper corners 
of the airstairs cutout, which could progress and result in an 
inability to maintain cabin pressurization.

(f) Compliance

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

(g) Inspections and Corrective Actions

    (1) For airplane Groups 1 through 4, as identified in Boeing 
Special Attention Service Bulletin 737-53-1083, Revision 5, dated 
July 22, 2014: Except as required by paragraph (j)(1) of this AD, at 
the applicable

[[Page 16561]]

time specified in table 1, 2, or 3, as applicable, of paragraph 
1.E., ``Compliance,'' of Boeing Special Attention Service Bulletin 
737 53-1083, Revision 5, dated July 22, 2014, do the inspections 
specified in paragraphs (g)(1)(i), (g)(1)(ii), (g)(1)(iii), and 
(g)(1)(iv) of this AD for cracks at the forward entry doorway and 
airstairs cutout, and do all applicable corrective actions, in 
accordance with Parts 1 and 3 of the Accomplishment Instructions of 
Boeing Special Attention Service Bulletin 737-53-1083, Revision 5, 
dated July 22, 2014, except as required by paragraph (j)(2) of this 
AD. Repeat the inspections, thereafter, at the interval specified in 
table 1, 2, or 3, as applicable, of paragraph 1.E., ``Compliance,'' 
of Boeing Special Attention Service Bulletin 737-53-1083, Revision 
5, dated July 22, 2014. Do all applicable corrective actions before 
further flight. Any repair done in accordance with Part 3 of the 
Accomplishment Instructions of Boeing Special Attention Service 
Bulletin 737-53-1083, Revision 5, dated July 22, 2014, terminates 
the repetitive inspections required by paragraph (g)(1) of this AD 
for the repaired area only.
    (i) An external detailed and high frequency eddy current (HFEC) 
inspection of the skin.
    (ii) An internal detailed and HFEC inspection of exposed parts 
of the bear strap.
    (iii) A detailed and HFEC inspection along the edge of the 
cutout in the skin, skin doubler, and bear strap.
    (iv) An external low frequency eddy current inspection (LFEC) of 
the skin and bearstrap.
    (2) For Groups 1 and 2 airplanes that have been repaired using 
any of the service information identified in paragraph (g)(2)(i), 
(g)(2)(ii), or (g)(2)(iii) of this AD, the inspections required by 
paragraph (g)(1) of this AD are not required for the repaired area.
    (i) Boeing Service Bulletin 737-53-1083, Revision 1, dated 
October 25, 1985.
    (ii) Boeing Service Bulletin 737-53-1083, Revision 2, dated 
March 25, 1988.
    (iii) Boeing Service Bulletin 737-53-1083, Revision 3, dated 
December 7, 1989.
    (3) For Groups 3 and 4 airplanes, as identified in Boeing 
Special Attention Service Bulletin 737-53-1083, Revision 5, dated 
July 22, 2014: Accomplishment of a repair specified in Part 3, 
``Permanent Repair,'' of Paragraph 3.B., ``Work Instructions,'' of 
the Accomplishment Instructions of Boeing Special Attention Service 
Bulletin 737-53-1083, Revision 5, dated July 22, 2014, except as 
required by paragraph (j)(2) of this AD, terminates the inspections 
required by paragraph (g)(1) of this AD for the repaired area(s) 
only.
    (4) For Group 5 airplanes, as identified in Boeing Special 
Attention Service Bulletin 737-53-1083, Revision 5, dated July 22, 
2014: Within 120 days after the effective date of this AD, inspect 
the forward entry door cutout and airstairs cutout for cracks, and 
repair any crack, using a method approved in accordance with the 
procedures specified in paragraph (l) of this AD.

(h) Optional Preventive Modification

    For Groups 1 and 2, Configurations 5 and 6 airplanes; and Groups 
3 and 4 airplanes; as identified in Boeing Special Attention Service 
Bulletin 737-53-1083, Revision 5, dated July 22, 2014: Except as 
required by paragraph (j)(2) of this AD, accomplishment of the 
preventive modification in accordance with Part 2 of the 
Accomplishment Instructions of Boeing Special Attention Service 
Bulletin 737-53-1083, Revision 5, dated July 22, 2014, terminates 
the inspections required by paragraph (g)(1) of this AD.

(i) Post-Modification and Post-Repair Repetitive Inspections

    The post-modification and post-repair repetitive inspections 
specified in table 4 of paragraph 1.E., ``Compliance,'' of Boeing 
Special Attention Service Bulletin 737-53-1083, Revision 5, dated 
July 22, 2014, are not required by this AD.

    Note 1 to paragraph (i) of this AD:  The inspections specified 
in table 4 of paragraph 1.E., ``Compliance,'' of Boeing Special 
Attention Service Bulletin 737-53-1083, Revision 5, dated July 22, 
2014, may be used in support of compliance with Section 
121.1109(c)(2) or 129.109(b)(2) of the Federal Aviation Regulations 
(14 CFR 121.1109(c)(2) or 14 CFR 129.109(b)(2)). The corresponding 
actions specified in the Accomplishment Instructions of Boeing 
Special Attention Service Bulletin 737-53-1083, Revision 5, dated 
July 22, 2014, are not required by this AD.

(j) Exceptions to Service Information Specifications

    (1) Where Boeing Special Attention Service Bulletin 737-53-1083, 
Revision 5, dated July 22, 2014, specifies a compliance time ``after 
the Revision 4 date of this service bulletin,'' this AD requires 
compliance within the specified compliance time after the effective 
date of this AD.
    (2) Where Boeing Special Attention Service Bulletin 737-53-1083, 
Revision 5, dated July 22, 2014, specifies to contact Boeing for 
repair instructions, this AD requires repair before further flight 
using a method approved in accordance with the procedures specified 
in paragraph (l) of this AD.

(k) Credit for Previous Actions

    This paragraph provides credit for actions specified in 
paragraphs (g) and (h) of this AD, if those actions were performed 
before the effective date of this AD using Boeing Special Attention 
Service Bulletin 737-53-1083, Revision 4, dated December 18, 2013, 
which is not incorporated by reference in this AD.

(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 (m)(1) of this AD. 
Information may be emailed to: <a href="/cdn-cgi/l/email-protection#142d39555a5939585555575b3955595b57394651454151474047547275753a737b62"><span class="__cf_email__" data-cfemail="f8c1d5b9b6b5d5b4b9b9bbb7d5b9b5b7bbd5aabda9adbdabacabb89e9999d69f978e">[email&#160;protected]</span></a>.
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.
    (3) An AMOC that provides an acceptable level of safety may be 
used for any repair 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.

(m) Related Information

    (1) For more information about this AD, contact Nenita Odesa, 
Aerospace Engineer, Airframe Branch, ANM-120L, FAA, Los Angeles 
Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, 
CA 90712-4137; phone: 562-627-5234; fax: 562-627-5210; email: 
<a href="/cdn-cgi/l/email-protection#fb959e95928f9ad5949f9e889abb9d9a9ad59c948d"><span class="__cf_email__" data-cfemail="761813181f02175819121305173610171758111900">[email&#160;protected]</span></a>.
    (2) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (n)(3) and (n)(4) of this AD.

(n) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) Boeing Special Attention Service Bulletin 737-53-1083, 
Revision 5, dated July 22, 2014.
    (ii) Reserved.
    (3) 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 <a href="https://www.myboeingfleet.com">https://www.myboeingfleet.com</a>.
    (4) You may view this service information at 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.
    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call 202-741-6030, or go to: <a href="http://www.archives.gov/federal-register/cfr/ibr-locations.html">http://www.archives.gov/federal-register/cfr/ibr-locations.html</a>.

    Issued in Renton, Washington, on March 13, 2015.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2015-06753 Filed 3-27-15; 8:45 am]
 BILLING CODE 4910-13-P