AD 2012-25-13

[Federal Register Volume 78, Number 13 (Friday, January 18, 2013)]
[Rules and Regulations]
[Pages 4047-4050]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2013-00895]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2012-0299; Directorate Identifier 2011-NM-029-AD; 
Amendment 39-17295; AD 2012-25-13]
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 747-100, 747-200B, 747-200C, 747-200F, 747-
300, 747-400, 747-400F, and 747SR series airplanes. This AD was 
prompted by reports of broken and damaged latch pin retention bolts and 
subsequent migration of the latch pins of the main deck side cargo door 
(MDSCD). This AD requires various repetitive inspections of the MDSCD 
latch pin fittings, measuring the latch pin, and related investigative 
and corrective actions if necessary. This AD also requires modifying 
the latch pin fittings and installing new latch pins and latch pin 
fasteners. We are issuing this AD to prevent loss of the cargo door and 
rapid depressurization of the airplane.

DATES: This AD is effective February 22, 2013.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of February 22, 
2013.

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; phone: 206-544-5000, 
extension 1; fax: 206-766-5680; Internet: <a href="https://www.myboeingfleet.com">https://www.myboeingfleet.com</a>. You may review copies of the 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 <a href="http://www.regulations.gov">http://www.regulations.gov</a>; 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 Document 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: Bill Ashforth, Aerospace Engineer, 
Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office 
(ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-
6432; fax: 425-917-6590; email: <a href="/cdn-cgi/l/email-protection#16547f7a7a3857657e707964627e5670777738717960"><span class="__cf_email__" data-cfemail="8fcde6e3e3a1cefce7e9e0fdfbe7cfe9eeeea1e8e0f9">[email&#160;protected]</span></a>.

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to include an AD that would apply to the specified products. 
That NPRM published in the Federal Register on March 27, 2012 (77 FR 
18137). That NPRM proposed to require various repetitive inspections of 
the MDSCD latch pin fittings, measuring the latch pin, and related 
investigative and corrective actions if necessary. That NPRM also 
proposed to require modifying the latch pin fittings and installing new 
latch pins and latch pin fasteners.

Comments

    We gave the public the opportunity to participate in developing 
this AD. The following presents the comments received on the proposal 
(77 FR 18137, March 27, 2012) and the FAA's response to each comment.

Requests To Change Applicability

    Boeing and Thai Airways International PCL requested that we limit 
the applicability of the NPRM (77 FR 18137, March 27, 2012) to 
airplanes with a Boeing-certified MDSCD instead of airplanes identified 
in Boeing Alert Service Bulletin 747-52A2294, Revision 1, dated August 
16, 2011. The commenters requested this change to ensure that airplanes 
modified in the future to Model 747-400 Boeing Converted Freighter 
(BCF) with an MDSCD installation are inspected and modified per the 
intent of Boeing Alert Service Bulletin 747-52A2294, Revision 1, dated 
August 16, 2011.
    We partially agree with changing the applicability. The AD already 
provides coverage for the future Model 747-400 BCF airplanes with an 
MDSCD installation. That is, the applicability of the AD specifies 
Model 747-100, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-
400F, and 747SR series airplanes, certificated in any category, as 
identified in Boeing Alert Service Bulletin 747-52A2294, Revision 1, 
dated August 16, 2011. This service information identifies Model 747-
100, 747-200B, 747-200C, 747-200F, 747-300, 747-400, and 747-400F 
airplanes with an MDSCD installed in production or by a Boeing-approved 
modification. For clarification, per the Type Certificate Data Sheet 
(TCDS) for those airplanes, Model 747-400 BCF and 747-400 Special 
Freighter (SF) airplanes remain as Model 747-400 series airplanes for 
documentation purposes on the TCDS and with regard to the applicability 
of ADs. Where Boeing Alert Service Bulletin 747-52A2294, Revision 1, 
dated August 16, 2011, specifies ``all'' airplanes, this means past, 
present, and future airplanes.
    However, we found that Boeing Alert Service Bulletin 747-52A2294, 
Revision 1, dated August 16, 2011, does not currently provide a grace 
period for airplanes that have been modified with an MDSCD after the 
initial compliance time of 6 months after the effective date of this 
AD. Therefore, the initial compliance time specified in paragraph (g) 
of this AD has been modified to add a grace period for airplanes that 
are modified with an MDSCD after the effective date of this AD. 
Additionally, the initial compliance time reference to paragraph 1.E., 
``Compliance,'' of Boeing Alert Service Bulletin 747-52A2294, Revision 
1, dated August 16, 2011, as revised by Boeing Alert Service Bulletin 
747-52A2294, Revision 2, dated December 12, 2011, has been removed from 
paragraph (g) of this final rule.

Request To Change Service Information Reference

    Boeing requested that we change the service information reference 
in paragraphs (g), (h), (i), and (j) of the NPRM (77 FR 18137, March 
27, 2012) from Boeing Alert Service Bulletin 747-52A2294, Revision 1, 
dated August 16,

[[Page 4048]]

2011, as revised by Boeing Alert Service Bulletin 747-52A2294, Revision 
2, dated December 12, 2011, to Revision 3 of that service information. 
(Since Revision 3 has not been published, there is no issue date.) 
Boeing stated that Revision 3 of Boeing Alert Service Bulletin 747-
52A2294 will be a full revision that will ``update the effectivity list 
of Model 747-400 BCF airplanes,'' and will incorporate changes 
identified during validation, which was accomplished in March 2012. 
Boeing stated that Revision 3 of Boeing Alert Service Bulletin 747-
52A2294 will add no new work for airplanes having previously 
incorporated the actions specified in Boeing Alert Service Bulletin 
747-52A2294, Revision 1, dated August 16, 2011; or Revision 2, dated 
December 12, 2011.
    We disagree with referencing Revision 3 of Boeing Alert Service 
Bulletin 747-52A2294 in this final rule. Boeing has not submitted 
Revision 3 of Boeing Alert Service Bulletin 747-52A2294 for FAA 
approval. We consider it inappropriate to delay correcting the 
identified unsafe condition to wait for this new service information 
revision. However, after Revision 3 of Boeing Alert Service Bulletin 
747-52A2294 is FAA-approved and issued, operators may submit requests 
for approval of alternative methods of compliance (AMOCs) under the 
provisions of paragraph (l) of this AD to use Revision 3. We have not 
changed the final rule in this regard.

Request To Change Credit for Previous Actions

    Boeing requested that we change paragraph (k) of the NPRM (77 FR 
18137, March 27, 2012) to also give credit for actions required by 
paragraphs (g) and (h) of the NPRM, if those actions were performed 
before the effective date of the AD using Boeing Alert Service Bulletin 
747-52A2294, Revision 1, dated August 16, 2011, as revised by Boeing 
Alert Service Bulletin 747-52A2294, Revision 2, dated December 12, 
2011. Boeing stated that this request is related to its request to 
replace the service information reference in paragraphs (g), (h), (i), 
and (j) of the NPRM from Boeing Alert Service Bulletin 747-52A2294, 
Revision 1, dated August 16, 2011, as revised by Boeing Alert Service 
Bulletin 747-52A2294, Revision 2, dated December 12, 2011, to Revision 
3 of that service information.
    We partially agree. We agree to provide credit for Boeing Alert 
Service Bulletin 747-52A2294, Revision 1, dated August 16, 2011, before 
its revision by Boeing Alert Service Bulletin 747-52A2294, Revision 2, 
dated December 12, 2011. However, since we have not changed the AD to 
refer to Revision 3 of Boeing Alert Service Bulletin 747-52A2294, we 
disagree with specifying credit for using Boeing Alert Service Bulletin 
747-52A2294, Revision 1, dated August 16, 2011, as revised by Boeing 
Alert Service Bulletin 747-52A2294, Revision 2, dated December 12, 
2011. We have changed paragraph (k) of this AD to specify credit for 
the actions required by paragraphs (g) and (h) of this AD performed 
before the effective date of this AD using Boeing Alert Service 
Bulletin 747-52A2294, dated July 8, 2010; or Boeing Alert Service 
Bulletin 747-52A2294, Revision 1, dated August 16, 2011, before its 
revision by Boeing Alert Service Bulletin 747-52A2294, Revision 2, 
dated December 12, 2011.

Request To Change Unsafe Condition Statement

    Boeing requested that we modify the unsafe condition statement in 
the NPRM (77 FR 18137, March 27, 2012) by removing the reference to 
broken latch pin fittings. Boeing stated that Boeing Alert Service 
Bulletin 747-52A2294, dated July 8, 2010, was prompted by broken 
retention bolts and the subsequent migration of the latch pins rather 
than by the broken latch pin fittings. Boeing also stated that the 
service information recommends inspecting the latch pin fittings for 
damage, but that no broken latch pin fittings have been associated with 
this issue.
    We agree with the commenter's request. We have changed the Summary 
and paragraph (e) of the AD to state that this AD was prompted by 
reports of broken and damaged latch pin retention bolts and subsequent 
migration of the latch pins of the MDSCD.

Request To Add Federal Aviation Regulation Reference

    Boeing requested that we add a reference to paragraph (b) of 
section 25.571 of the Federal Aviation Regulations (14 CFR 25.571) to 
paragraph (l)(3), ``Alternative Methods of Compliance (AMOCs),'' of the 
NPRM (77 FR 18137, March 27, 2012). Boeing stated that paragraph (b) is 
the specific paragraph of 14 CFR 25.571, Amendment 45, that requires 
compliance for the Model 747 airframe beyond the original certification 
basis.
    We find that clarification is necessary. The reference to section 
25.571 of the Federal Aviation Regulations (14 CFR 25.571), Amendment 
45, was included inadvertently in paragraph (l)(3) of the NPRM (77 FR 
18137, March 27, 2012). Therefore, we have revised paragraph (l)(3) of 
this final rule to remove the reference to ``14 CFR 25.571, Amendment 
45.''

Request To Change Compliance Time for Deactivated MDSCDs

    KLM Royal Dutch Airlines (KLM) requested that we add alternative 
compliance times to the NPRM (77 FR 18137, March 27, 2012) for 
deactivated MDSCDs. KLM stated that a deactivated MDSCD is much less 
susceptible to mechanical defects than an activated door. KLM suggested 
that an initial inspection within 6 months after the effective date of 
the AD, and a modification as required by paragraph (h) of the NPRM 
within 48 months after the effective date of the AD, would be 
sufficient to maintain a safe condition. KLM noted that a similar 
alternative was made for deactivated main entry doors in paragraph (f) 
of AD 2007-12-11, Amendment 39-15089 (72 FR 31984, June 11, 2007).
    We agree that a deactivated MDSCD is much less susceptible to 
mechanical defects than an activated door. We have changed paragraphs 
(g) and (i) of this AD to reference an exception in new paragraph 
(j)(3) of this AD, which states that the repetitive inspections 
required by paragraphs (g) and (i) of this AD are not applicable to a 
deactivated MDSCD. The initial inspection required by paragraph (g) of 
this AD and modifications and replacements required by paragraph (h) of 
this AD are still applicable to a deactivated MDSCD. In addition, when 
the MDSCD is reactivated, the repetitive inspections required by 
paragraphs (g) and (i) of this AD are applicable and must be done at 
intervals not to exceed those specified in paragraph 1.E., 
``Compliance,'' of Boeing Alert Service Bulletin 747-52A2294, Revision 
1, dated August 16, 2011, as revised by Boeing Alert Service Bulletin 
747-52A2294, Revision 2, dated December 12, 2011.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
the 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 (77 FR 18137, March 27, 2012) for correcting the unsafe 
condition; and
    <bullet> Do not add any additional burden upon the public than was 
already proposed in the NPRM (77 FR 18137, March 27, 2012).

[[Page 4049]]

    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of the AD.

Costs of Compliance

    We estimate that this AD affects 77 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
----------------------------------------------------------------------------------------------------------------
Detailed inspection, including     4 work-hours x $85               $0  $340 per inspection  $26,180 per
 torque check.                      per hour = $340                      cycle.               inspection cycle.
                                    per inspection
                                    cycle.
Modification.....................  11 work-hours x $85           5,530  $6,465.............  $497,805.
                                    per hour = $935.
Post-modification detailed         2 work-hours x $85                0  $170 per inspection  $13,090 per
 inspection.                        per hour = $170                      cycle.               inspection cycle.
                                    per inspection
                                    cycle.
----------------------------------------------------------------------------------------------------------------

    We estimate the following costs to do necessary repairs and 
replacements that would be required based on the results of the 
inspection. We have no way of determining the number of aircraft that 
might need these repairs.

                                               On-Condition Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                     Cost per
                    Action                                 Labor cost               Parts cost        product
----------------------------------------------------------------------------------------------------------------
Repair/replacements (Groups 1 and 2 airplanes)  7 work-hours x $85 per hour =            $11,478         $12,073
                                                 $595.
Repair/replacements (Group 3 airplanes).......  7 work-hours x $85 per hour =             12,254          12,849
                                                 $595.
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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):

2012-25-13 The Boeing Company: Amendment 39-17295; Docket No. FAA-
2012-0299; Directorate Identifier 2011-NM-029-AD.

(a) Effective Date

    This AD is effective February 22, 2013.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to The Boeing Company Model 747-100, 747-200B, 
747-200C, 747-200F, 747-300, 747-400, 747-400F, and 747SR series 
airplanes; certificated in any category; as identified in Boeing 
Alert Service Bulletin 747-52A2294, Revision 1, dated August 16, 
2011.

(d) Subject

    Joint Aircraft System Component (JASC)/Air Transport Association 
(ATA) of America Code 52, Doors.

(e) Unsafe Condition

    This AD was prompted by reports of broken and damaged latch pin 
retention bolts and subsequent migration of the latch pins of the 
main deck side cargo door (MDSCD). We are issuing this AD to prevent 
loss of the cargo door and rapid depressurization of the airplane.

(f) Compliance

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

(g) Inspection and Corrective Action

    At the applicable time specified in paragraph (g)(1) or (g)(2) 
of this AD, whichever occurs later: Do a detailed inspection of the 
ten MDSCD latch pin fittings to detect loose, broken, damaged, or 
missing retention bolts and nuts; measure the latch pin diameter; 
and do all applicable related investigative and corrective actions, 
except as required by paragraph (j)(1) of this AD; in accordance 
with the Accomplishment Instructions of Boeing Alert Service 
Bulletin 747-52A2294, Revision 1, dated August 16, 2011, as revised 
by Boeing Alert Service

[[Page 4050]]

Bulletin 747-52A2294, Revision 2, dated December 12, 2011. Do all 
applicable related investigative and corrective actions before 
further flight. Repeat the inspection thereafter, except as required 
by paragraph (j)(3) of this AD, at intervals not to exceed those 
specified in paragraph 1.E., ``Compliance,'' of Boeing Alert Service 
Bulletin 747-52A2294, Revision 1, dated August 16, 2011, as revised 
by Boeing Alert Service Bulletin 747-52A2294, Revision 2, dated 
December 12, 2011.
    (1) Within 6 months after the effective date of this AD.
    (2) Within 6 months after the installation of an MDSCD installed 
in Boeing production or by a Boeing-approved modification.

(h) Modification of Latch Pin Fittings and Replacement of Latch Pins 
and Latch Pin Retention Fasteners

    At the time specified in paragraph 1.E., ``Compliance,'' of 
Boeing Alert Service Bulletin 747-52A2294, Revision 1, dated August 
16, 2011, as revised by Boeing Alert Service Bulletin 747-52A2294, 
Revision 2, dated December 12, 2011, except as provided by paragraph 
(j)(2) of this AD: Modify the 10 MDSCD latch pin fittings, replace 
the latch pins with new latch pins, and replace the latch pin 
retention fasteners with new latch pin retention fasteners, except 
as required by paragraph (j)(1) of this AD, in accordance with the 
Accomplishment Instructions of Boeing Alert Service Bulletin 747-
52A2294, Revision 1, dated August 16, 2011, as revised by Boeing 
Alert Service Bulletin 747-52A2294, Revision 2, dated December 12, 
2011. Accomplishment of the actions specified in paragraph (h) of 
this AD terminates the inspection required in paragraph (g) of this 
AD.

(i) Post-Modification Inspection and Corrective Action

    At the applicable compliance time specified in paragraph 1.E., 
``Compliance,'' of Boeing Alert Service Bulletin 747-52A2294, 
Revision 1, dated August 16, 2011, as revised by Boeing Alert 
Service Bulletin 747-52A2294, Revision 2, dated December 12, 2011, 
except as provided by paragraph (j)(2) of this AD: Do a detailed 
inspection of the 10 MDSCD latch pin fittings to detect loose, 
broken, damaged, or missing retention bolts and nuts; measure the 
latch pin diameter; and do all applicable related investigative and 
corrective actions, except as required by paragraph (j)(1) of this 
AD; in accordance with the Accomplishment Instructions of Boeing 
Alert Service Bulletin 747-52A2294, Revision 1, dated August 16, 
2011, as revised by Boeing Alert Service Bulletin 747-52A2294, 
Revision 2, dated December 12, 2011. Do the applicable related 
investigative and corrective actions before further flight. Repeat 
the inspection thereafter, except as required by paragraph (j)(3) of 
this AD, at intervals not to exceed those specified in paragraph 
1.E., ``Compliance,'' of Boeing Alert Service Bulletin 747-52A2294, 
Revision 1, dated August 16, 2011, as revised by Boeing Alert 
Service Bulletin 747-52A2294, Revision 2, dated December 12, 2011.

(j) Exceptions to Service Bulletin Specifications

    (1) If any damage is found during any inspection required by 
this AD, and Boeing Alert Service Bulletin 747-52A2294, Revision 1, 
dated August 16, 2011, as revised by Boeing Alert Service Bulletin 
747-52A2294, Revision 2, dated December 12, 2011, specifies to 
contact Boeing for appropriate action: 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 747-52A2294, Revision 1, 
dated August 16, 2011, as revised by Boeing Alert Service Bulletin 
747-52A2294, Revision 2, dated December 12, 2011, specifies a 
compliance time relative to the issue date of that service bulletin, 
this AD requires compliance within the specified compliance time 
after the effective date of this AD.
    (3) The repetitive inspections required by paragraphs (g) and 
(i) of this AD are not applicable to a deactivated MDSCD. However, 
the initial inspection required by paragraph (g) of this AD and 
modifications and replacements required by paragraph (h) of this AD 
are still applicable to a deactivated MDSCD. When the MDSCD is 
reactivated, the repetitive inspections required by paragraphs (g) 
and (i) of this AD are applicable and must be done thereafter at 
intervals not to exceed those specified in paragraph 1.E., 
``Compliance,'' of Boeing Alert Service Bulletin 747-52A2294, 
Revision 1, dated August 16, 2011, as revised by Boeing Alert 
Service Bulletin 747-52A2294, Revision 2, dated December 12, 2011.

(k) Credit for Previous Actions

    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 747-52A2294, dated July 8, 2010, which is not incorporated 
by reference in this AD; or Boeing Alert Service Bulletin 747-
52A2294, Revision 1, dated August 16, 2011, before its revision by 
Boeing Alert Service Bulletin 747-52A2294, Revision 2, dated 
December 12, 2011.

(l) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Seattle Aircraft Certification Office, 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 the Related Information section of this AD. 
Information may be emailed to: <a href="/cdn-cgi/l/email-protection#e9d0c4a8a7a4c4ba8c889d9d858cc4a8aaa6c4a8a4a6aac4bb8c989c8c9a9d9aa98f8888c78e869f"><span class="__cf_email__" data-cfemail="093024484744245a6c687d7d656c24484a46244844464a245b6c787c6c7a7d7a496f6868276e667f">[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, 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.

(m) Related Information

    (1) For more information about this AD, contact Bill Ashforth, 
Aerospace Engineer, Airframe Branch, ANM-120S, Seattle Aircraft 
Certification Office (ACO), FAA, 1601 Lind Avenue SW., Renton, WA 
98057-3356; phone: 425-917-6432; fax: 425-917-6590; email: 
<a href="/cdn-cgi/l/email-protection#90d2f9fcfcbed1e3f8f6ffe2e4f8d0f6f1f1bef7ffe6"><span class="__cf_email__" data-cfemail="03416a6f6f2d42706b656c71776b436562622d646c75">[email&#160;protected]</span></a>.
    (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; phone: 206-544-
5000, extension 1; fax: 206-766-5680; Internet: <a href="https://www.myboeingfleet.com">https://www.myboeingfleet.com</a>.

(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 Alert Service Bulletin 747-52A2294, Revision 1, dated 
August 16, 2011.
    (ii) Boeing Alert Service Bulletin 747-52A2294, Revision 2, 
dated December 12, 2011.
    (3) For The Boeing Company 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; phone: 206-544-5000, extension 1; fax: 206-766-5680; Internet: 
<a href="https://www.myboeingfleet.com">https://www.myboeingfleet.com</a>.
    (4) You may review copies of the referenced service information 
at the FAA, Transport Airplane Directorate, the FAA, 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 December 12, 2012.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2013-00895 Filed 1-17-13; 8:45 am]
BILLING CODE 4910-13-P