Federal Register, Volume 75, Number 226, November 24, 2010, Pages 71519-72652 Page: 71,535
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Federal Register/Vol. 75, No. 226/Wednesday, November 24, 2010/Rules and Regulations 71535
(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
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Adoption of the Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as
a 1. The authority citation for part 39
continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
2. The FAA amends 39.13 by adding
the following new airworthiness
2010-24-01 The Boeing Company:
Amendment 39-16519; Docket No.
FAA-2010-0764; Directorate Identifier
(a) This AD is effective December 29, 2010.
(c) This AD applies to The Boeing
Company Model 737-900ER series airplanes,
certificated in any category, as identified in
Boeing Alert Service Bulletin 737-57A1308,
Revision 1, dated October 1, 2009.
(d) Air Transport Association (ATA) of
America Code 57: Wings.
(e) This AD results from reports of cracks
emanating from the keyway of the fuel tank
access hole. The Federal Aviation
Administration is issuing this AD to detect
and correct such cracking, which could result
in the loss of the lower wing skin load path
and consequent structural failure of the wing.
(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.
(g) Before the accumulation of 7,500 total
flight cycles, or within 1,000 flight cycles
after the effective date of this AD, whichever
occurs later, do a one-time general visual
inspection for a keyway in the fuel tank
access door cutouts 531BB and 631BB, in
accordance with the Accomplishment
Instructions of Boeing Alert Service Bulletin
737-57A1308, Revision 1, dated October 1,
2009 ("the service bulletin").
Note 1: For the purposes of this AD, a
general visual inspection is: "A visual
examination of an interior or exterior area,
installation, or assembly to detect obvious
damage, failure, or irregularity. This level of
inspection is made from within touching
distance unless otherwise specified. A mirror
may be necessary to ensure visual access to
all surfaces in the inspection area. This level
of inspection is made under normally
available lighting conditions such as
daylight, hangar lighting, flashlight, or
droplight and may require removal or
opening of access panels or doors. Stands,
ladders, or platforms may be required to gain
proximity to the area being checked."
(1) If both access door cutouts do not have
a keyway, no further action is required by
(2) If any access door has a keyway, before
the accumulation of 7,500 total flight cycles,
or within 1,000 flight cycles after the
effective date of this AD, whichever occurs
later, do a high frequency eddy current
(HFEC) inspection for cracking of the
keyway, in accordance with the
Accomplishment Instructions of the service
(i) If no cracking is found during the HFEC
inspection, before further flight, modify the
profile of the keyway of the fuel tank access
door cutout, in accordance with the
Accomplishment Instructions of the service
(ii) If any cracking is found and the crack
is 0.030 inch or less in length, before further
flight repair the keyway, in accordance with
the Accomplishment Instructions of the
(iii) If any cracking is found and the crack
is greater than 0.030 inch in length, before
further flight, repair the crack using a method
approved in accordance with the procedures
specified in paragraph (h) of this AD.
Alternative Methods of Compliance
(h)(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. Send information to ATTN:
Nancy Marsh, Aerospace Engineer, Airframe
Branch, ANM-120S, FAA, Seattle Aircraft
Certification Office, 1601 Lind Avenue, SW.,
Renton, Washington 98057-3356; telephone
(425) 917-6440; fax (425) 917-6590.
Information may be e-mailed to: 9-ANM-
(2) To request a different method of
compliance or a different compliance time
for this AD, follow the procedures in 14 CFR
39.19. Before using any approved AMOC on
any airplane to which the AMOC applies,
notify your principal maintenance inspector
(PMI) or principal avionics inspector (PAI),
as appropriate, or lacking a principal
inspector, your local Flight Standards District
Office. The AMOC approval letter must
specifically reference this AD.
(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.
(i) For more information about this AD,
contact Nancy Marsh, Aerospace Engineer,
Airframe Branch, ANM-120S, FAA, Seattle
Aircraft Certification Office, 1601 Lind
Avenue, SW., Renton, Washington 98057-
3356; telephone (425) 917-6440; fax (425)
917-6590; e-mail firstname.lastname@example.org.
Material Incorporated by Reference
(j) You must use the Boeing Alert Service
Bulletin 737-57A1308, Revision 1, dated
October 1, 2009, to do the actions required
by this AD, unless the AD specifies
(1) The Director of the Federal Register
approved the incorporation by reference of
this service information under 5 U.S.C.
552(a) and 1 CFR part 51.
(2) For service information identified in
this AD, contact Boeing Commercial
Airplanes, Attention: Data & Services
Management, P.O. Box 3707, MC 2H-65,
Seattle, Washington 98124-2207; telephone
206-544-5000, extension 1; fax 206-766-
5680; e-mail email@example.com;
(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
(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 http://www.archives.gov/
federal register/code ofjederal regulations/
Issued in Renton, Washington, on
November 5, 2010.
Jeffrey E. Duven,
Acting Manager, Transport Airplane
Directorate, Aircraft Certification Service.
[FR Doc. 2010-28936 Filed 11-23-10; 8:45 am]
BILLING CODE 4910-13-P
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United States. Office of the Federal Register. Federal Register, Volume 75, Number 226, November 24, 2010, Pages 71519-72652, periodical, November 24, 2010; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc52807/m1/25/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.