AD 2011-17-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-81 (MD-81) | Airworthiness Directives; The Boeing Company Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-82 (MD-82) | Airworthiness Directives; The Boeing Company Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-83 (MD-83) | Airworthiness Directives; The Boeing Company Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-87 (MD-87) | Airworthiness Directives; The Boeing Company Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes |
| aircraft | The Boeing Company | MD-88 | Airworthiness Directives; The Boeing Company Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes |
Unsafe Condition
Cracking of the lower rear spar caps of the wings at the outboard flap and inboard drive hinge at station Xrs=164.000, due to material fatigue from normal flap operating loads.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct repetitive inspections for cracking of the lower rear spar caps of the wings, and perform investigative and corrective actions if necessary. Conduct repetitive inspections of certain repaired areas.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours after the effective date of the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
We are adopting a new airworthiness directive (AD) for the products listed above. This AD requires repetitive inspections for cracking of the lower rear spar caps of the wings, and related investigative and corrective actions if necessary. This AD also requires repetitive inspections of certain repaired areas. This AD was prompted by reports of cracking of the wing rear spar lower cap at the outboard flap and inboard drive hinge at station Xrs=164.000; the cracking is due to material fatigue from normal flap operating loads. We are issuing this AD to detect and correct such fatigue cracking, which could result in fuel leaks, damage to the wing skin or other structure, and consequent reduced structural integrity of the wing.
Document Text
Show stored source text (verify against official source)
[Federal Register Volume 76, Number 162 (Monday, August 22, 2011)]
[Rules and Regulations]
[Pages 52225-52229]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2011-20672]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2009-1213; Directorate Identifier 2009-NM-097-AD;
Amendment 39-16775; AD 2011-17-11]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Model DC-9-81 (MD-
81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88
Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for the
products listed above. This AD requires repetitive inspections for
cracking of the lower rear spar caps of the wings, and related
investigative and corrective actions if necessary. This AD also
requires repetitive inspections of certain repaired areas. This AD was
prompted by reports of cracking of the wing rear spar lower cap at the
outboard flap and inboard drive hinge at station Xrs=164.000; the
cracking is due to material fatigue from normal flap operating loads.
We are issuing this AD to detect and correct such fatigue cracking,
which could result in fuel leaks, damage to the wing skin or other
structure, and consequent reduced structural integrity of the wing.
DATES: This AD is effective September 26, 2011.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in the AD as of September 26,
2011.
ADDRESSES: For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
3855 Lakewood Boulevard, MC D800-0019, Long Beach, California 90846-
0001; telephone 206-544-5000, extension 2; fax 206-766-5683; e-mail
<a href="/cdn-cgi/l/email-protection#c3a7b0a6eda1aca6a0acae83a1aca6aaada4eda0acae"><span class="__cf_email__" data-cfemail="036770662d616c66606c6e43616c666a6d642d606c6e">[email protected]</span></a>; 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,
Washington. 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: Roger Durbin, Aerospace Engineer,
Airframe Branch, ANM-120L, FAA, Los Angeles Aircraft Certification
Office, 3960 Paramount Boulevard, Lakewood, California 90712-4137;
phone: (562) 627-5233; fax: (562) 627-5210; e-mail:
<a href="/cdn-cgi/l/email-protection#abd9c4ccced985cfded9c9c2c5ebcdcaca85ccc4dd"><span class="__cf_email__" data-cfemail="15677a7270673b716067777c7b557374743b727a63">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to include an airworthiness directive (AD) that would apply to
the specified products. That NPRM published in the Federal Register on
February 8, 2010 (75 FR 6162). That NPRM proposed to require repetitive
inspections for cracking of the lower rear spar caps of the wings, and
related investigative and corrective actions if necessary. That NPRM
also proposed to require repetitive inspections of certain repaired
areas.
[[Page 52226]]
Actions Since Issuance of NPRM
The NPRM referred to Boeing Alert Service Bulletin MD80-57A242,
dated May 8, 2009, as the appropriate source of service information for
accomplishing the actions. Since issuance of the NPRM, Boeing has
issued Alert Service Bulletin MD80-57A242, Revision 1, dated January 7,
2011. No more work is necessary for airplanes on which the original
issue was used to accomplish the actions. Certain procedures specified
in Revision 1 of this service bulletin have been clarified to provide
additional instructions. Revision 1 of this service bulletin also added
procedures for splice repair options and removed the instruction to
contact Boeing for that repair. In addition, the term ``temporary
repair,'' as specified in the original issue of this service bulletin,
was changed to ``doubler repair'' in Revision 1 of this service
bulletin. In addition, instead of contacting Boeing for repair
instructions for Condition 3, Revision 1 of this service bulletin
specifies three sub-conditions and provides corresponding doubler or
splice repairs.
We have revised this AD to refer to Boeing Alert Service Bulletin
MD80-57A242, Revision 1, dated January 7, 2011, as the appropriate
source of service information for accomplishing the actions, and added
a new paragraph (h) to this AD (and reidentified subsequent paragraphs)
to give credit for using Boeing Alert Service Bulletin MD80-57A242,
dated May 8, 2009, for accomplishing the actions. We also have replaced
the word ``temporary'' in paragraphs (g)(2) and (j) of this AD with the
word ``doubler.'' In addition, we have removed paragraph (i) of the
NPRM, which specified contacting the FAA for the splice repair.
Further, we have specified in paragraph (g)(1) of this AD that
operators may still accomplish the required action in accordance with
the procedures specified in paragraph (k) of this AD.
Comments
We gave the public the opportunity to participate in developing
this AD. The following presents the comments received on the proposal
and the FAA's response to each comment.
Request To Include Inspections Required by Previous ADs
The Air Transport Association (ATA), on behalf of its member
American Airlines (AAL), asked that applicable inspection requirements
in AD 96-23-07 R1, Amendment 39-10110 (62 FR 44208, August 20, 1997);
and AD 2004-11-07, Amendment 39-13653 (69 FR 13514, June 4, 2004); be
included in the NPRM. ATA and AAL reiterated certain inspection/
compliance requirements in those previous ADs, and stated that some of
those requirements conflict with the requirements in this NPRM. ATA and
AAL recommend incorporating those ADs into this NPRM to clarify,
consolidate, and update the compliance requirements.
We do not agree to include the inspection requirements from
previous ADs in this AD. Although the inspections in the previous ADs
are similar, the root cause of the unsafe condition in this AD (i.e.,
high-cycle fatigue in this AD versus manufacturing quality in the
previous ADs) is different, which means the inspections and terminating
actions are different as well, and do not conflict with the
requirements specified in the existing ADs referenced by the commenter.
Therefore, we have determined that the actions should be addressed in
this ``stand-alone'' AD. We have not changed the AD in this regard.
Request To Clarify Repetitive Inspection Requirement
ATA and AAL stated that the Relevant Service Information section of
the NPRM specifies that no action is necessary for Group 1,
Configuration 1 airplanes. The commenters added that this statement
conflicts with paragraph 1.E., ``Compliance,'' of Boeing Alert Service
Bulletin MD80-57A242, Revision 1, dated January 7, 2011 (which also is
related to AD 96-23-07 R1). That service bulletin also specifies the
following in a note: ``Repeat inspections in accordance with Service
Bulletin MD80-57-184, Paragraph 1.D.(5), ``Compliance,'' are still
required.''
We agree that clarification is necessary. The NPRM clearly
specifies that no action is necessary for Group 1, Configuration 1
airplanes. That statement is correct as it applies to this new AD.
However, the note which appears in Boeing Alert Service Bulletin MD80-
57A242, Revision 1, dated January 7, 2011, serves as a reminder that
repetitive inspections are still required in accordance with AD 96-23-
07 R1 for Group 1, Configuration 1 airplanes. For clarification
purposes, we have revised paragraph (g) of this AD to exclude Group 1,
Configuration 1 airplanes from the requirements of that paragraph.
Request To Clarify Certain Procedures in Differences Section
ATA and AAL also stated that the Differences section of the NPRM
specifies FAA- or Boeing Organization Designation Authorization (ODA)-
approved repairs for any crack found (less than or equal to 2.0 inches)
in a temporary repair done during the repetitive inspections. The
commenters noted that paragraph (j) of the NPRM specifies, ``[i]f any
crack is found during any inspection of a temporary repair, before
further flight, repair using a method approved in accordance with the
procedures specified in paragraph (k) of this AD.'' The commenters
added that these requirements do not clearly detail the crack
requirements and limitations; since the temporary repair is reinforcing
an existing crack, a crack will always be found during subsequent
inspections. The commenters also stated that the ``any crack''
statement conflicts with the requirements of paragraph (c)(3)(i) of AD
96-23-07 R1, which states, ``[i]f any crack progression is found during
any repetitive eddy current inspection following accomplishment of the
temporary repair, contact the ACO.'' Additionally, the commenters noted
that the ``any crack'' statement conflicts with Boeing Drawing 3668B,
Disposition A through D.
We disagree with the commenters. The requirement in this AD is to
do repetitive eddy current inspections around the perimeter of the
repair doublers; therefore, indications of the initially stop-drilled
and repaired cracking would not be found during accomplishment of the
repetitive inspections. We have not changed the AD in this regard.
Request To Clarify Certain Procedures in Referenced Service Information
In addition, ATA and AAL stated that the NPRM should further
clarify the new requirements associated with Boeing Alert Service
Bulletin MD80-57A242, dated May 8, 2009, and identified in two sections
of the NPRM--the differences section in the preamble and the exceptions
in paragraphs (h) and (i) of the NPRM.
Where the NPRM specifies that ``crack length is longer than 2.0
inches or is located in the rear spar cap forward horizontal leg
radius,'' the commenters stated this could be further clarified by
stating that this is Condition 3 in Boeing Alert Service Bulletin MD80-
57A242, dated May 8, 2009, or by adding a table to the AD.
The commenters also stated that where paragraph (i) of the NPRM
specifies that ``If any crack is found during any inspection required
by this AD and Boeing Alert Service Bulletin MD80-57A242, dated May 8,
2009, specifies contacting Boeing for repair * * *,'' the phrase could
be further
[[Page 52227]]
clarified by adding a table to the AD that identifies the three
conditions specified in Boeing Alert Service Bulletin MD80-57A242,
dated May 8, 2009, the three sub-conditions under Condition 2, the
temporary repair condition, and the associated AD requirements.
We find that some clarification is necessary. Condition 3 in Boeing
Alert Service Bulletin MD80-57A242, Revision 1, dated January 7, 2011,
provides clarification with regard to the cracking, as follows: '' * *
* lower spar cap has a crack longer than 2.0 inches in length or crack
in the rear spar cap forward horizontal leg radius.'' No change to this
AD is necessary in this regard because the differences section of the
preamble of the NPRM is not restated in the final rule.
In addition, as explained previously we removed paragraph (i) of
the NPRM from this final rule because Boeing Alert Service Bulletin
MD80-57A242, Revision 1, dated January 7, 2011, now provides splice
repair instructions. Therefore, it is no longer necessary to include an
exception to this service bulletin. We have not changed the AD in this
regard.
Request To Call Out Specific Service Bulletin Sections
Additionally, ATA and AAL noted concerns that the proposed
requirements of the NPRM specify accomplishing what AAL interpreted to
be all the requirements in the service information. The commenters
stated that the proposed AD should be clarified and further highlighted
to indicate that only specific sections of the service bulletin are
required by the proposed AD. AAL reiterated certain open and close
procedures and noted that accomplishing those procedures should not
affect compliance with the proposed AD. AAL asked that we include the
following in the AD: ``Only the SB procedures specified by the AD are
affected by the FAA-AD. Other procedures such as preparation, open/
close, and access procedures described by the SB are not affected by
FAA-AD compliance requirements.'' AAL also asked that we consider
including the procedures that are or are not affected by the proposed
AD in its content.
We acknowledge the commenters' concerns, but disagree with the
request to change this AD. In Section 3.A., ``General Information,''
paragraphs 8 through 10 of Boeing Alert Service Bulletin MD80-57A242,
Revision 1, dated January 7, 2011, additional procedures are defined
that can be used for accomplishing certain actions. In addition,
paragraph 13 of that section specifies, in part, that when the words
``refer to'' are used, and the operator has an accepted alternative
procedure, the accepted alternative procedure can be used. Therefore,
we have not changed the AD in this regard.
Request To Clarify Crack Limitations in Referenced Service Information
ATA and AAL noted that the criteria for crack findings specified in
Boeing Alert Service Bulletin MD80-57A242, dated May 9, 2009, do not
provide clear guidance regarding crack limitations. The commenters
added that the procedures in this service bulletin do not describe
criteria for a crack with the stop-drill configuration. The commenters
asked that the criteria for crack findings be further clarified.
We agree that clarification is necessary. The measurement of the
crack length is intended to be the total curvilinear crack length,
which is consistent with standard maintenance practice; therefore, no
additional measurement criteria are necessary. The effect of stop
drills on crack length is not relevant because Boeing Alert Service
Bulletin MD80-57A242, Revision 1, dated January 7, 2011, specifies
actions based on the length of the unrepaired cracks, and not on
repaired or stop-drilled cracks. We have not changed the AD in this
regard.
ATA and AAL also noted that the procedures in Boeing Alert Service
Bulletin MD80-57A242, dated May 9, 2009, are inconsistent regarding
acceptable crack configurations for the forward horizontal leg radius
for the lower and upper spar caps. The commenters stated that the
procedures specify that a crack cannot be in the forward horizontal leg
radius for the lower cap, and those procedures refer to Drawing
J060271, Note 29. The commenter stated that this drawing does have this
limitation for the lower cap as well as the upper cap. However, that
service bulletin does not refer to Note 29 for the upper cap
procedures. The commenter requested that clarification of the crack
criteria for doubler repairs on the upper spar cap be provided.
We agree that clarification is necessary. Boeing Alert Service
Bulletin MD80-57A242, Revision 1, dated January 7, 2011, clarifies the
crack criteria for the upper cap using Drawing J060271, Note 29, for
the crack criteria when determining whether doubler repair of the upper
spar cap is allowed. We have included Boeing Alert Service Bulletin
MD80-57A242, Revision 1, dated January 7, 2011, as an appropriate
source of service information for accomplishing the actions required by
this AD.
Request for Validation of the Service Bulletin
ATA and AAL expressed concern that Boeing Alert Service Bulletin
MD80-57A242, dated May 8, 2009, did not have a validation program
performed to ensure that data, instructions, and processes specified in
that service bulletin are correct, clear, appropriate, and understood
by maintenance personnel performing the work.
From this statement, we infer the commenters are requesting that
the procedures specified in Boeing Alert Service Bulletin MD80-57A242,
dated May 8, 2009, be validated by the airplane manufacturer. We agree
that certain procedures in Boeing Alert Service Bulletin MD80-57A242,
dated May 8, 2009, need clarification. However, Boeing Alert Service
Bulletin MD80-57A242, Revision 1, dated January 7, 2011, provides
clarification for certain instructions provided in the original issue
of that service bulletin so the procedures are clear and concise and to
ensure they are understood by maintenance personnel performing the
work.
In addition, it should be noted that the inspections and repairs in
Boeing Alert Service Bulletin MD80-57A242, Revision 1, dated January 7,
2011, are identical to those in AD 96-23-07 R1, although the compliance
times and applicability are different. (AD 96-23-07 R1 referred to
McDonnell Douglas MD-80 Service Bulletin 57-184, Revision 1, dated
December 22, 1994, as the appropriate source of service information for
accomplishing the actions.) In light of this information, a formal
evaluation of Boeing Alert Service Bulletin MD80-57A242 was not deemed
necessary. We have not changed the AD in this regard.
Explanation of Changes Made to This AD
We have revised this AD to identify the name of the manufacturer as
published in the most recent type certificate data sheet for the
affected airplane models.
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. We have determined that
these changes will neither increase the economic burden on any operator
nor increase the scope of the AD.
[[Page 52228]]
Explanation of Change to Costs of Compliance
Since issuance of the NPRM, we have increased the labor rate used
in the Costs of Compliance from $80 per work-hour to $85 per work-hour.
The Costs of Compliance information, below, reflects this increase in
the specified labor rate.
Costs of Compliance
We estimate that this AD affects 670 airplanes of U.S. registry. We
also estimate that it will take about 4 work-hours per product to
comply with this AD. The average labor rate is $85 per work-hour. Based
on these figures, we estimate the cost of this AD to the U.S. operators
to be $227,800, or $340 per product, per inspection cycle.
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):
2011-17-11 The Boeing Company: Amendment 39-16775; Docket No. FAA-
2009-1213; Directorate Identifier 2009-NM-097-AD.
Effective Date
(a) This AD is effective September 26, 2011.
Affected ADs
(b) None.
Applicability
(c) This AD applies to The Boeing Company Model DC-9-81 (MD-81),
DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88
airplanes, certificated in any category; as identified in Boeing
Alert Service Bulletin MD80-57A242, Revision 1, dated January 7,
2011.
Subject
(d) Joint Aircraft System Component (JASC)/Air Transport
Association (ATA) of America Code 57: Wings.
Unsafe Condition
(e) This AD was prompted by reports of cracking of the wing rear
spar lower cap at the outboard flap and inboard drive hinge at
station Xrs=164.000; the cracking is due to material fatigue from
normal flap operating loads. We are issuing this AD to detect and
correct fatigue cracking, which could result in fuel leaks, damage
to the wing skin or other structure, and consequent reduced
structural integrity of the wing.
Compliance
(f) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Repetitive Inspections and Related Investigative and Corrective Actions
(g) At the applicable times specified in paragraph 1.E. of
Boeing Alert Service Bulletin MD80-57A242, Revision 1, dated January
7, 2011, do the actions required by paragraphs (g)(1) and (g)(2) of
this AD, except as required by paragraph (i) of this AD. The actions
specified in paragraphs (g)(1) and (g)(2) of this AD are not
required for Group 1, Configuration 1 airplanes, as identified in
Boeing Alert Service Bulletin MD80-57A242, Revision 1, dated January
7, 2011.
(1) Do initial and repetitive eddy current testing high
frequency (ETHF) inspections for cracking of the lower rear spar
caps of the wings, and do all applicable related investigative and
corrective actions, by doing all the applicable actions specified in
the Accomplishment Instructions of Boeing Alert Service Bulletin
MD80-57A242, Revision 1, dated January 7, 2011; or in accordance
with the procedures specified in paragraph (k) of this AD.
(2) Do initial and repetitive ETHF inspections for cracking of
any doubler repairs, and do all applicable related investigative and
corrective actions, by doing all the applicable actions specified in
the Accomplishment Instructions of Boeing Alert Service Bulletin
MD80-57A242, Revision 1, dated January 7, 2011; except as required
by paragraph (j) of this AD.
Credit for Actions Accomplished in Accordance With Previous Service
Information
(h) Actions done before the effective date of this AD in
accordance with Boeing Alert Service Bulletin MD80-57A242, dated May
8, 2009, are acceptable for compliance with the corresponding
requirements of this AD.
Exceptions to Service Bulletin Specifications
(i) Where Boeing Alert Service Bulletin MD80-57A242, Revision 1,
dated January 7, 2011, specifies a compliance time after the date of
that service bulletin, this AD requires compliance within the
specified compliance time after the effective date of this AD.
(j) If any crack is found during any inspection of a doubler
repair, before further flight, repair using a method approved in
accordance with the procedures specified in paragraph (k) of this
AD.
Alternative Methods of Compliance (AMOCs)
(k)(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 the Related Information
section of this AD.
(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.
[[Page 52229]]
Related Information
(l) For more information about this AD, contact Roger Durbin,
Aerospace Engineer, Airframe Branch, ANM-120L, FAA, Los Angeles
Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood,
California 90712-4137; phone: (562) 627-5233; fax: (562) 627-5210;
e-mail: <a href="/cdn-cgi/l/email-protection#0d7f626a687f2369787f6f64634d6b6c6c236a627b"><span class="__cf_email__" data-cfemail="c9bba6aeacbbe7adbcbbaba0a789afa8a8e7aea6bf">[email protected]</span></a>.
Material Incorporated by Reference
(m) You must use Boeing Alert Service Bulletin MD80-57A242,
Revision 1, dated January 7, 2011; to do the actions required by
this AD, unless the AD specifies otherwise.
(1) The Director of the Federal Register approved the
incorporation by reference of the service information contained in
this AD under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) For service information identified in this AD, Boeing
Commercial Airplanes, Attention: Data & Services Management, 3855
Lakewood Boulevard, MC D800-0019, Long Beach, California 90846-0001;
telephone 206-544-5000, extension 2; fax 206-766-5683; e-mail
<a href="/cdn-cgi/l/email-protection#c7a3b4a2e9a5a8a2a4a8aa87a5a8a2aea9a0e9a4a8aa"><span class="__cf_email__" data-cfemail="600413054e020f05030f0d20020f05090e074e030f0d">[email protected]</span></a>; Internet <a href="https://www.myboeingfleet.com">https://www.myboeingfleet.com</a>.
(3) You may review copies of the service information at the FAA,
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton,
Washington. For information on the availability of this material at
the FAA, call 425-227-1221.
(4) You may also review copies of the service information that
is incorporated by reference at the National Archives and Records
Administration (NARA). For information on the availability of this
material at an NARA facility, call 202-741-6030, or go to <a href="http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html">http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html</a>.
Issued in Renton, Washington, on August 8, 2011.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2011-20672 Filed 8-19-11; 8:45 am]
BILLING CODE 4910-13-P
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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