[Federal Register Volume 80, Number 154 (Tuesday, August 11, 2015)]
[Rules and Regulations]
[Pages 48013-48018]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-19316]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0487; Directorate Identifier 2014-NM-026-AD; 
Amendment 39-18226; AD 2015-16-01]
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 superseding Airworthiness Directive (AD) 2012-19-11 for 
certain The Boeing Company Model 737 airplanes. AD 2012-19-11 required 
incorporating design changes to improve the reliability of the cabin 
altitude warning system by installing a redundant cabin altitude 
pressure switch, replacing the aural warning module (AWM) with a new or 
reworked AWM, and changing certain wire bundles or connecting certain 
previously capped and stowed wires as necessary. For certain airplanes, 
AD 2012-19-11 also required prior or concurrent incorporation of 
related design changes by modifying the instrument panels, installing 
light assemblies, modifying the wire bundles, and installing a new 
circuit breaker, as necessary. This AD was prompted by the report of a 
flightcrew not receiving an aural warning during a lack-of-cabin 
pressurization event. We are issuing this AD to prevent the loss of 
cabin altitude warning, which could delay flightcrew recognition of a 
lack of cabin pressurization, and could result in incapacitation of the 
flightcrew due to hypoxia (a lack of oxygen in the body), and 
consequent loss of control of the airplane.

DATES: This AD is effective September 15, 2015.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of September 15, 
2015.
    The Director of the Federal Register approved the incorporation by 
reference of certain other publications listed in this AD as of 
November 7, 2012 (77 FR 60296, October 3, 2012).

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 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.

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-2014-
0487; 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: Francis Smith, Aerospace Engineer, 
Cabin Safety and Environmental Systems Branch, ANM-150S, FAA, Seattle 
Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 98057-
3356; telephone: 425-917-6596; fax: 425-917-6590; email: 
[email protected].

SUPPLEMENTARY INFORMATION: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to supersede AD 2012-19-11, Amendment 39-17206 (77 FR 60296, 
October 3, 2012). AD 2012-19-11

[[Page 48014]]

applied to certain The Boeing Company Model 737 airplanes. The NPRM 
published in the Federal Register on July 29, 2014 (79 FR 43983).
    The NPRM was prompted by the report of a flightcrew not receiving 
an aural warning during a lack of cabin pressurization event. The NPRM 
proposed to continue to require incorporating design changes to improve 
the reliability of the cabin altitude warning system by installing a 
redundant cabin altitude pressure switch, replacing the AWM with a new 
or reworked AWM, and changing certain wire bundles or connecting 
certain previously capped and stowed wires as necessary.
    For certain airplanes, the NPRM proposed to continue to require 
prior or concurrent incorporation of related design changes by 
modifying the instrument panels, installing light assemblies, modifying 
the wire bundles, and installing a new circuit breaker, as necessary. 
The NPRM also proposed to require, for certain airplanes, incorporating 
related design changes. The NPRM also proposed, for certain airplanes, 
to no longer give credit for the prior accomplishment of certain 
actions. We are issuing this AD to prevent the loss of cabin altitude 
warning, which could delay flightcrew recognition of a lack of cabin 
pressurization, and could result in incapacitation of the flightcrew 
due to hypoxia (a lack of oxygen in the body), and consequent loss of 
control of the airplane.

Comments

    We gave the public the opportunity to participate in developing 
this AD. The following presents the comments received on the NPRM (79 
FR 43983, July 29, 2014) and the FAA's response to each comment.

Request To Use the Latest Service Information

    Boeing requested that the proposed rule (79 FR 43983, July 29, 
2014) incorporate Boeing Special Attention Service Bulletin 737-21-
1165, Revision 3, dated July 16, 2014, and Boeing Alert Service 
Bulletin 737-31A1325, Revision 2, dated June 5, 2014. Boeing stated 
that it has released new service information and the service 
information should be reflected in the proposed rule.
    We agree with the commenter's request to reference the latest 
service information. We have revised this final rule accordingly.
    Boeing Alert Service Bulletin 737-31A1325, Revision 2, dated June 
5, 2014, updates reference document names, corrects typographical 
errors, and includes airplanes that were removed in error in an earlier 
revision of the service information. The procedures remain unchanged. 
In addition, we have added paragraph (j)(2) of this AD, to give credit 
for previous actions, if those actions were performed before the 
effective date of this AD using Boeing Alert Service Bulletin 737-
31A1325, dated January 11, 2010, and Boeing Alert Service Bulletin 737-
31A1325, Revision 1, dated July 5, 2012.
    Boeing Special Attention Service Bulletin 737-21-1165, Revision 3, 
dated July 16, 2014, includes configuration differences found by 
operators during incorporation of earlier revisions of the service 
information. The procedures otherwise remain unchanged.

Request To Add an Exception to the Proposed Rule (79 FR 43983, July 29, 
2014)

    An anonymous commenter requested to add an exception to the 
proposed rule (79 FR 43983, July 29, 2014). The commenter stated that 
paragraphs (j)(2) and (j)(3) of the proposed AD should include the same 
exceptions for group 24 through 25 airplanes, and group 27 through 33 
airplanes, as identified in Boeing Alert Service Bulletin 737-31A1332, 
Revision 4, dated October 31, 2013.
    The commenter also stated that paragraphs (i)(2) and (i)(3) of AD 
2012-19-11, Amendment 39-17206 (77 FR 60296, October 3, 2012), did not 
give credit for previous actions for group 24 through 25 airplanes, and 
group 27 through 33 airplanes, as identified in Boeing Alert Service 
Bulletin 737-31A1332, Revision 3, dated March 28, 2012. The commenter 
stated that this is because paragraph 1.C. of Boeing Alert Service 
Bulletin 737-31A1332, Revision 3, dated March 28, 2012, explicitly 
states that changes given in figures 48 through 50 affect wiring 
changes previously accomplished in Boeing Service Bulletin 737-24A1141; 
also figures 15 through 17, and airplane line numbers 1 through 740, 
are moved to a new group 24 through 25 airplanes, and group 27 through 
33 airplanes.
    The commenter stated that if an airplane is identified in groups 24 
through 25 airplanes, and group 27 through 33 airplanes, of Boeing 
Alert Service Bulletin 737-31A1332, Revision 4, dated October 31, 2013, 
the operator can take credit for previous actions accomplished using 
Boeing Alert Service Bulletin 737-31A1332, Revision 2, dated August 18, 
2011, and Boeing Alert Service Bulletin 737-31A1332, Revision 1, dated 
June 24, 2010. Therefore, the commenter stated that the operator must, 
per the exceptions of paragraphs (i)(2) or (i)(3) of AD 2012-19-11, 
Amendment 39-17206 (77 FR 60296, October 3, 2012), re-comply with the 
proposed AD once the additional actions are taken.
    We disagree with the commenter's request. This AD corrects an error 
in paragraph (i) of AD 2012-19-11, Amendment 39-17206 (77 FR 60296, 
October 3, 2012). In AD 2012-19-11, airplanes were identified 
incorrectly as having wiring instructions that may conflict with the 
corrective actions of AD 2009-16-07, Amendment 39-15990 (74 FR 41607, 
August 18, 2009). Further, this AD supersedes (i.e., ``replaces'') AD 
2012-19-11, and therefore compliance is required with this new AD only. 
In addition, there are still exclusions in this AD, but they are now 
identified by line numbers--not by groups--as shown in paragraphs 
(j)(1)(ii) and (j)(1)(iii) of this AD. We have not changed this AD in 
this regard.

Request To Extend the Compliance Time

    United Airlines (UAL) requested that the compliance time for the 
proposed rule (79 FR 43983, July 29, 2014) be extended a minimum of 1 
year for all airplanes. UAL stated that this is due to the increased 
scope of required testing not documented in Boeing Special Attention 
Service Bulletin 737-21-1165, Revision 1, dated July 16, 2010, as 
revised by Boeing Special Attention Service Bulletin 737-21-1165, 
Revision 2, dated April 30, 2012. UAL commented that Boeing Special 
Attention Service Bulletin 737-21-1165, Revision 2, dated April 30, 
2012, is for the removal of the junction box 46, and additional 
administrative time is required during the accomplishment of each 
airplane for obtaining an alternate method of compliance (AMOC).
    UAL commented that due to the removal of junction box 46, 43 
additional operational checks must be accomplished and are estimated to 
take an additional 30 hours of elapsed time for each airplane. UAL 
stated that the estimated costs of the proposed rule (79 FR 43983, July 
29, 2014) should be revised to include an additional 30 hours for 
testing.
    UAL also stated that multiple AMOCs have been required for the 
concurrent requirements and for airplanes affected by AD 2013-02-05, 
Amendment 39-17326 (78 FR 6202, January 30, 2013) due to errors in the 
Boeing data. UAL stated that the time necessary to seek approved AMOCs 
extends the completion time of each airplane beyond the time allotted 
in the estimated costs and can result in the airplanes being out of 
service.

[[Page 48015]]

    We disagree with the commenter's request. Boeing has provided its 
work estimates based on average times for accomplishing its service 
information specifically to correct the unsafe condition. The time 
spent to perform additional functional checks and testing to systems 
incidentally associated with the unsafe condition in this AD and any 
associated administrative actions in carrying out all work (related to 
this AD) will vary among operators. Additionally, we do not consider 
the time spent processing AMOCs when we determine estimated costs of an 
AD because of the variable occurrences, scope of technical deviations, 
and elective nature of many AMOC requests.
    The estimate of labor hours provides only a guideline for 
operators, and operators are encouraged to review all relevant work 
steps to create time and cost estimates specific to their schedules and 
work processes. Operators that request AMOCs while their airplane is in 
maintenance do not have to wait for the Seattle Aircraft Certification 
Office (ACO) approval before they can return the airplane to service, 
provided the 72-month compliance time has not passed, and operators do 
not claim compliance credit in their maintenance records until the AMOC 
is received. As long as the 72-month compliance time has not been 
exceeded, an AMOC is not needed; therefore, requests for compliance 
time extensions and Seattle ACO responses to early AMOC requests have 
no effect on returning an airplane to service from an operator's 
maintenance cycle.
    We base AD compliance times primarily on our assessment of safety 
risk. We consider the overall risk to the fleet, including the severity 
of the failure and the likelihood of the failure's occurrence in 
development of the compliance time for the ADs. We work with the 
respective manufacturers to ensure that all appropriate instructions 
and parts are available at the appropriate time to meet our collective 
safety goals, and that those goals are based on safety of the fleet. We 
have not changed this AD in this regard.

Effect of Winglets on AD

    Aviation Partners Boeing stated that the installation of winglets 
per STC ST01219SE or ST00830SE does not affect the accomplishment of 
the manufacturer's service instructions.

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:
     Are consistent with the intent that was proposed in the 
NPRM (79 FR 43983, July 29, 2014) for correcting the unsafe condition; 
and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM (79 FR 43983, July 29, 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 the following service information:
     Boeing Alert Service Bulletin 737-31A1325, Revision 2, 
dated June 5, 2014.
     Boeing Alert Service Bulletin 737-31A1332, Revision 4, 
dated October 31, 2013.
     Boeing Special Attention Service Bulletin 737-21-1164, 
Revision 2, dated August 23, 2013.
     Boeing Special Attention Service Bulletin 737-21-1165, 
Revision 3, dated July 16, 2014.
    The service information describe procedures for incorporating 
design changes to improve the reliability of the cabin altitude warning 
system by installing a redundant cabin altitude pressure switch, 
replacing the AWM with a new or reworked AWM, and changing certain wire 
bundles or connecting certain previously capped and stowed wires as 
necessary. This service information is reasonably available because the 
interested parties have access to it through their normal course of 
business or by the means identified in the ADDRESSES section of this 
AD.

Costs of Compliance

    We estimate that this AD affects 1,618 airplanes of U.S. registry.
    We estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                 Cost on U.S.
              Action                    Labor cost        Parts cost      Cost per product        operators
----------------------------------------------------------------------------------------------------------------
Install a redundant cabin          Up to 62                    $33,576  Up to $38,846......  Up to $62,852,828
 altitude pressure switch,          work[dash]hours x
 replace the AWM with a new or      $85 per hour = up
 reworked AWM, change certain       to $5,270.
 wire bundles or connect certain
 capped and stowed wires
 [retained actions from AD 2012-
 19-11, Amendment 39-17206 (77 FR
 60296, October 3, 2012), for
 1,618 airplanes].
Modify the instrument panels,      Up to 92                      5,292  Up to $13,112......  Up to $20,926,752
 install light assemblies, modify   work[dash]hours x
 the wire bundles, and install a    $85 per hour = up
 new circuit breaker (concurrent    to $7,820.
 requirements) [retained actions
 from AD 2012-19-11, Amendment 39-
 17206 (77 FR 60296, October 3,
 2012), for 1,596 airplanes].
Modify the instrument panels,      Up to 92                      5,292  Up to $13,112......  Up to $288,464
 install light assemblies, modify   work[dash]hours x
 the wire bundles, and install a    $85 per hour = up
 new circuit breaker (concurrent    to $7,820.
 requirements) [new actions for
 22 airplanes].
----------------------------------------------------------------------------------------------------------------

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,

[[Page 48016]]

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 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 removing Airworthiness Directive (AD) 
2012-19-11, Amendment 39-17206 (77 FR 60296, October 3, 2012), and 
adding the following new AD:

2015-16-01 The Boeing Company: Amendment 39-18226; Docket No. FAA-
2014-0487; Directorate Identifier 2014-NM-026-AD.

(a) Effective Date

    This AD is effective September 15, 2015.

(b) Affected ADs

    This AD replaces AD 2012-19-11, Amendment 39-17206 (77 FR 60296, 
October 3, 2012).

(c) Applicability

    This AD applies to The Boeing Company airplanes, certificated in 
any category, as identified in paragraphs (c)(1) and (c)(2) of this 
AD.
    (1) Model 737-100, -200, -200C, -300,--400, and -500 series 
airplanes, as identified in Boeing Special Attention Service 
Bulletin 737-21-1164, Revision 2, dated August 23, 2013.
    (2) Model 737-600, -700, -700C, -800, -900, and -900ER series 
airplanes, as identified in Boeing Special Attention Service 
Bulletin 737-21-1165, Revision 3, dated July 16, 2014.

(d) Subject

    Air Transport Association (ATA) of America Code 21, Air 
Conditioning.

(e) Unsafe Condition

    This AD was prompted by the report of a flightcrew not receiving 
an aural warning during a lack of cabin pressurization event. We are 
issuing this AD to prevent the loss of cabin altitude warning, which 
could delay flightcrew recognition of a lack of cabin 
pressurization, and could result in incapacitation of the flightcrew 
due to hypoxia (a lack of oxygen in the body), and consequent loss 
of control of the airplane.

(f) Compliance

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

(g) Retained Installation

    This paragraph restates the actions required by paragraph (g) of 
AD 2012-19-11, Amendment 39-17206 (77 FR 60296, October 3, 2012), 
with revised service information. Within 72 months after November 7, 
2012 (the effective date of AD 2012-19-11), install a redundant 
cabin altitude pressure switch, replace the aural warning module 
(AWM) with a new or reworked AWM, and change certain wire bundles or 
connect certain capped and stowed wires, as applicable, in 
accordance with the Accomplishment Instructions of the applicable 
service information in paragraphs (g)(1) and (g)(2) of this AD; 
except as provided by paragraph (k)(1) of this AD.
    (1) Boeing Special Attention Service Bulletin 737-21-1164, 
Revision 1, dated May 17, 2012; or Boeing Special Attention Service 
Bulletin 737-21-1164, Revision 2, dated August 23, 2013 (for Model 
737-100, -200, -200C, -300, -400, and -500 series airplanes). As of 
the effective date of this AD, use Boeing Special Attention Service 
Bulletin 737-21-1164, Revision 2, dated August 23, 2013, for the 
actions specified in paragraph (g) of this AD.
    (2) Boeing Special Attention Service Bulletin 737-21-1165, 
Revision 1, dated July 16, 2010, as revised by Boeing Special 
Attention Service Bulletin 737-21-1165, Revision 2, dated April 30, 
2012; or Boeing Special Attention Service Bulletin 737-21-1165, 
Revision 3, dated July 16, 2014 (for Model 737-600, -700, -700C, -
800, -900, and -900ER series airplanes). As of the effective date of 
this AD use Boeing Special Attention Service Bulletin 737-21-1165, 
Revision 3, dated July 16, 2014.

(h) Retained Concurrent Actions

    This paragraph restates the concurrent actions required by 
paragraph (h) of AD 2012-19-11, Amendment 39-17206 (77 FR 60296, 
October 3, 2012), with revised service information. For airplanes 
identified in Boeing Alert Service Bulletin 737-31A1325, dated 
January 11, 2010 (for Model 737-100, -200, -200C, -300, -400, and -
500 series airplanes); and Boeing Alert Service Bulletin 737-
31A1332, Revision 3, dated March 28, 2012 (for Model 737-600, -700, 
-700C, -800, -900, and -900ER series airplanes); except as provided 
by paragraph (i) of this AD: Before or concurrently with 
accomplishment of the actions specified in paragraph (g) of this AD, 
as applicable, modify the instrument panels, install light 
assemblies, modify the wire bundles, and install a new circuit 
breaker, in accordance with the Accomplishment Instructions of the 
applicable service information in paragraphs (h)(1) and (h)(2) of 
this AD; except as provided by paragraph (k)(2) of this AD.
    (1) The service information for Model 737-100, -200, -200C, -
300, -400, and -500 series airplanes as identified in paragraphs 
(h)(1)(i), (h)(1)(ii), and (h)(1)(iii), of this AD. As of the 
effective date of this AD, use Boeing Alert Service Bulletin 737-
31A1325, Revision 2, dated June 5, 2014 (for Model 737-100, -200, -
200C, -300, -400, and -500 series airplanes), for the actions 
specified in paragraph (h) of this AD.
    (i) Boeing Alert Service Bulletin 737-31A1325, dated January 11, 
2010.
    (ii) Boeing Alert Service Bulletin 737-31A1325, Revision 1, 
dated July 5, 2012.
    (iii) Boeing Alert Service Bulletin 737-31A1325, Revision 2, 
dated June 5, 2014.
    (2) Boeing Alert Service Bulletin 737-31A1332, Revision 3, dated 
March 28, 2012; or Boeing Alert Service Bulletin 737-31A1332, 
Revision 4, dated October 31, 2013 (for Model 737-600, -700, -700C, 
-800, -900, and -900ER series airplanes). As of the effective date 
of this AD, use Boeing Alert Service Bulletin 737-31A1332, Revision 
4, dated October 31, 2013 (for Model 737-600, -700, -700C, -800, -
900, and -900ER series airplanes), for the actions specified in 
paragraph (h) of this AD.

(i) New Concurrent Requirement

    For airplanes having variable numbers YA001 through YA008 
inclusive, YA251, YA501 through YA508 inclusive, and YC321 through 
YC325 inclusive: Before or concurrently with accomplishment of the 
actions specified in paragraph (g) of this AD, or within 18 months 
after the effective date of this AD, whichever occurs later, modify 
the instrument panels, install light assemblies, modify the wire 
bundles, and install a new circuit breaker, in accordance with the 
Accomplishment Instructions of Boeing Alert Service Bulletin 737-
31A1332, Revision 4, dated October 31, 2013.

[[Page 48017]]

(j) Credit for Previous Actions

    (1) This paragraph restates the credit for previous actions 
stated in paragraph (i) of AD 2012-19-11, Amendment 39-17206 (77 FR 
60296, October 3, 2012), with correct paragraph reference and 
revised exempted airplanes.
    (i) This paragraph provides credit for the actions required by 
paragraph (g) of this AD, if those actions were performed before 
November 7, 2012 (the effective date of AD 2012-19-11, Amendment 39-
17206 (77 FR 60296, October 3, 2012)), using Boeing Special 
Attention Service Bulletin 737-21-1165, Revision 1, dated July 16, 
2010, which was incorporated by reference in AD 2012-19-11.
    (ii) For airplanes identified in Boeing Alert Service Bulletin 
737-31A1332, Revision 1, dated June 24, 2010; except airplanes 
having variable numbers YA001 through YA019 inclusive, YA201 through 
YA203 inclusive, YA231 through YA242 inclusive, YA251, YA252, YA271, 
YA272, YA301, YA302, YA311, YA312, YA501 through YA508 inclusive, 
YA541, YA701, YA702, YC001 through YC007 inclusive, YC051, YC052, 
YC101, YC102, YC111, YC121, YC301, YC302, YC321 through YC330 
inclusive, YC381, YC401 through YC403 inclusive, YC501, YC502, and 
YE001 through YE003 inclusive: This paragraph provides credit for 
the actions required by paragraph (h) of this AD, if those actions 
were performed before the effective date of this AD using Boeing 
Alert Service Bulletin 737-31A1332, Revision 1, dated June 24, 2010, 
which was incorporated by reference in AD 2012-19-11, Amendment 39-
17206 (77 FR 60296, October 3, 2012).
    (iii) For airplanes identified in Boeing Alert Service Bulletin 
737-31A1332, Revision 2, dated August 18, 2011; except airplanes 
identified in paragraph (j)(4) of this AD and airplanes having 
variable numbers YA001 through YA019 inclusive, YA201 through YA203 
inclusive, YA231 through YA242 inclusive, YA251, YA252, YA271, 
YA272, YA301, YA302, YA311, YA312, YA501 through YA508 inclusive, 
YA541, YA701, YA702, YC001 through YC007 inclusive, YC051, YC052, 
YC101, YC102, YC111, YC121, YC301, YC302, YC321 through YC330 
inclusive, YC381, YC401 through YC403 inclusive, YC501, YC502, and 
YE001 through YE003 inclusive: This paragraph provides credit for 
the actions required by paragraph (h) of this AD, if those actions 
were performed before the effective date of this AD using Boeing 
Alert Service Bulletin 737-31A1332, Revision 2, dated August 18, 
2011, which was incorporated by reference in AD 2012-19-11, 
Amendment 39-17206 (77 FR 60296, October 3, 2012).
    (iv) For Group 21, Configuration 2 airplanes identified in 
Boeing Alert Service Bulletin 737-31A1332, Revision 3, dated March 
28, 2012: This paragraph provides credit for the actions required by 
paragraph (h) of this AD, if those actions were performed before the 
effective date of this AD using Boeing Alert Service Bulletin 737-
31A1332, Revision 2, dated August 18, 2011, which was incorporated 
by reference in AD 2012-19-11, Amendment 39-17206 (77 FR 60296, 
October 3, 2012); and provided that the actions specified in Boeing 
Service Bulletin 737-21-1171, dated February 12, 2009 (which is not 
incorporated by reference in this AD), were accomplished prior to or 
concurrently with the actions specified in Boeing Alert Service 
Bulletin 737-31A1332, Revision 2, dated August 18, 2011.
    (2) This paragraph provides credit for the actions specified in 
paragraph (h) of this AD, if those actions were performed before the 
effective date of this AD using the service information identified 
in paragraph (j)(2)(i) or (j)(2)(ii) of this AD.
    (i) Boeing Alert Service Bulletin 737-31A1325, dated January 11, 
2010, which was incorporated by reference in AD 2012-19-11, 
Amendment 39-17206 (77 FR 60296, October 3, 2012).
    (ii) Boeing Alert Service Bulletin 737-31A1325, Revision 1, 
dated July 5, 2012, which is not incorporated by reference in this 
AD.

(k) New Requirements to This AD: Exceptions to the Service Information

    (1) Where Boeing Special Attention Service Bulletin 737-21-1164, 
Revision 2, dated August 23, 2013, specifies to contact Boeing for 
instructions: Before further flight, repair using a method approved 
in accordance with the procedures specified in paragraph (l) of this 
AD.
    (2) Where Boeing Alert Service Bulletin 737-31A1325, Revision 2, 
dated June 5, 2014, specifies to contact Boeing for instructions: 
Before further flight, repair using a method approved in accordance 
with the procedures specified in paragraph (l) of this AD.

(l) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Seattle 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: [email protected].
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.
    (3) An AMOC that provides an acceptable level of safety may be 
used for any repair required by this AD if it is approved by the 
Boeing Commercial Airplanes Organization Designation Authorization 
(ODA) that has been authorized by the Manager, Seattle 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 2012-19-11, Amendment 39-17206 (77 FR 
60296, October 3, 2012), are approved as AMOCs for the corresponding 
provisions of this AD.

(m) Related Information

    (1) For more information about this AD, contact Francis Smith, 
Aerospace Engineer, Cabin Safety and Environmental Systems Branch, 
ANM-150S, FAA, Seattle Aircraft Certification Office, 1601 Lind 
Avenue SW., Renton, WA 98057-3356; phone: 425-917-6596; fax: 425-
917-6590; email: [email protected].
    (2) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (n)(5) and (n)(6) 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.
    (3) The following service information was approved for IBR on 
September 15, 2015.
    (i) Boeing Alert Service Bulletin 737-31A1325, Revision 2, dated 
June 5, 2014.
    (ii) Boeing Alert Service Bulletin 737-31A1332, Revision 4, 
dated October 31, 2013.
    (iii) Boeing Special Attention Service Bulletin 737-21-1164, 
Revision 2, dated August 23, 2013.
    (iv) Boeing Special Attention Service Bulletin 737-21-1165, 
Revision 3, dated July 16, 2014.
    (4) The following service information was approved for IBR on 
November 7, 2012 (77 FR 60296, October 3, 2012).
    (i) Boeing Alert Service Bulletin 737-31A1325, dated January 11, 
2010.
    (ii) Boeing Alert Service Bulletin 737-31A1332, Revision 1, 
dated June 24, 2010.
    (iii) Boeing Alert Service Bulletin 737-31A1332, Revision 2, 
dated August 18, 2011.
    (iv) Boeing Alert Service Bulletin 737-31A1332, Revision 3, 
dated March 28, 2012.
    (v) Boeing Special Attention Service Bulletin 737-21-1164, 
Revision 1, dated May 17, 2012.
    (vi) Boeing Special Attention Service Bulletin 737-21-1165, 
Revision 1, dated July 16, 2010.
    (vii) Boeing Special Attention Service Bulletin 737-21-1165, 
Revision 2, dated April 30, 2012.
    (5) For Boeing 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.
    (6) 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.
    (7) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.


[[Page 48018]]


    Issued in Renton, Washington, on July 22, 2015.
Victor Wicklund,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2015-19316 Filed 8-10-15; 8:45 am]
 BILLING CODE 4910-13-P