[Federal Register Volume 75, Number 133 (Tuesday, July 13, 2010)]
[Rules and Regulations]
[Pages 39818-39820]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-16435]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2010-0383; Directorate Identifier 2009-NM-214-AD;
Amendment 39-16362; AD 2010-14-17]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Model 747-100, 747-
100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400,
747SR, and 747SP Series 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
Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F,
747-300, 747-400, 747SR, and 747SP series airplanes. This AD requires
repetitive detailed inspections of certain overwing intercostal webs,
and related investigative and corrective actions if necessary. This AD
results from reports of cracks in overwing intercostal webs. We are
issuing this AD to detect and correct such cracking, which could grow
and result in a severed intercostal. If an intercostal is severed,
cracks could develop in the adjacent frame structure and skin,
resulting in a rapid loss of cabin pressure.
DATES: This AD is effective August 17, 2010.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in the AD as of August 17,
2010.
ADDRESSES: 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 protected];
Internet https://www.myboeingfleet.com.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov; 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 (telephone 800-647-5527) is the 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: Ivan Li, Aerospace Engineer, Airframe
Branch, ANM-120S, FAA, Seattle Aircraft Certification Office (ACO),
1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425)
917-6437; fax (425) 917-6590.
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
certain Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-
200F, 747-300, 747-400, 747SR, and 747SP series airplanes. That NPRM
was published in the Federal Register on April 21, 2010 (75 FR 20792).
That NPRM proposed to require repetitive detailed inspections of
certain overwing intercostal webs, and related investigative and
corrective actions if necessary.
Comments
We gave the public the opportunity to participate in developing
this AD. We considered the comment received. Boeing supports the NPRM.
Conclusion
We reviewed the relevant data, considered the comment received, and
determined that air safety and the public interest require adopting the
AD as proposed.
Costs of Compliance
We estimate that this AD affects 86 airplanes of U.S. registry. The
following table provides the estimated costs for U.S. operators to
comply with this AD.
Table--Estimated Costs
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Number of U.S.-
Action Work hours Average labor Parts Cost per product registered Fleet cost
rate per hour airplanes
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Inspection........................... 4 $85 None..................... $340 per inspection 86 $29,240 per inspection cycle.
cycle.
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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
[[Page 39819]]
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), and
(3) 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.
You can find our regulatory evaluation and the estimated costs of
compliance in the AD Docket.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
0
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 AD:
2010-14-17 The Boeing Company: Amendment 39-16362. Docket No. FAA-
2010-0383; Directorate Identifier 2009-NM-214-AD.
Effective Date
(a) This airworthiness directive (AD) is effective August 17, 2010.
Affected ADs
(b) None.
Applicability
(c) This AD applies to The Boeing Company Model 747-100, 747-100B,
747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747SR,
and 747SP series airplanes, certificated in any category; as identified
in Boeing Alert Service Bulletin 747-53A2750, dated August 27, 2009.
Subject
(d) Air Transport Association (ATA) of America Code 53: Fuselage.
Unsafe Condition
(e) This AD results from reports of cracks in overwing intercostal
webs between station (STA) 1160 and STA 1220. The Federal Aviation
Administration is issuing this AD to detect and correct such cracking,
which could grow and result in a severed intercostal. If an intercostal
is severed, cracks could develop in the adjacent frame structure and
skin, resulting in a rapid loss of cabin pressure.
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 of the Overwing Intercostal Web
(g) Before the accumulation of 8,000 total flight cycles, or within
1,500 flight cycles after the effective date of this AD, whichever
occurs later: Do a detailed inspection of the left-side and right-side
STAs 1160, 1180, 1200, and 1220 overwing intercostal webs, and do all
applicable related investigative and corrective actions, in accordance
with the Accomplishment Instructions of Boeing Alert Service Bulletin
747-53A2750, dated August 27, 2009, except as required by paragraph (i)
of this AD. Do all applicable related investigative and corrective
actions before further flight. If no cracking is found during any
detailed inspection, repeat the inspection thereafter at intervals not
to exceed 3,000 flight cycles.
(h) For any airplane with an overwing intercostal web replaced in
accordance with Boeing Alert Service Bulletin 747-53A2750, dated August
27, 2009: Within 6,000 flight cycles after the web was replaced, do a
detailed inspection of the replacement overwing intercostal web, and do
all applicable related investigative and corrective actions, in
accordance with the Accomplishment Instructions of Boeing Alert Service
Bulletin 747-53A2750, dated August 27, 2009, except as required by
paragraph (i) of this AD. Do all applicable related investigative and
corrective actions before further flight. If no cracking is found
during any detailed inspection, repeat the inspection thereafter at
intervals not to exceed 3,000 flight cycles.
Exception to Service Bulletin
(i) If any cracking is found during any inspection required by this
AD, and Boeing Alert Service Bulletin 747-53A2750, dated August 27,
2009, specifies contacting Boeing for appropriate action: Before
further flight, repair the cracking using a method approved in
accordance with the procedures provided in paragraph (j) of this AD.
Alternative Methods of Compliance (AMOCs)
(j)(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: Ivan
Li, Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle
Aircraft Certification Office (ACO), 1601 Lind Avenue, SW., Renton,
Washington 98057-3356; telephone (425) 917-6437; fax (425) 917-6590.
Information may be e-mailed to: [email protected].
(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 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.
Material Incorporated by Reference
(k) You must use Boeing Alert Service Bulletin 747-53A2750, dated
August 27, 2009, 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 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 protected]; Internet
https://www.myboeingfleet.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 425-227-1221.
(4) You may also review copies of the service information that is
incorporated
[[Page 39820]]
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/code_of_federal_regulations/ibr_locations.html.
Issued in Renton, Washington, on June 25, 2010.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2010-16435 Filed 7-12-10; 8:45 am]
BILLING CODE 4910-13-P