[Federal Register: September 9, 2005 (Volume 70, Number 174)]
[Rules and Regulations]
[Page 53554-53556]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr09se05-6]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2004-19540; Directorate Identifier 2004-NM-110-AD;
Amendment 39-14258; AD 2005-18-18]
RIN 2120-AA64
Airworthiness Directives; Boeing Model 757 Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain
[[Page 53555]]
Boeing Model 757 airplanes. This AD requires inspections of certain
wire bundles in the left and right engine-to-wing aft fairings for
discrepancies; installation of back-to-back p-clamps between the wire
and hydraulic supply tube at the aft end of the right-hand strut only;
and associated re-routing of the wire bundles, if necessary. This AD
results from a report indicating that a circuit breaker for the fuel
shutoff valve tripped due to a wire that chafed against the structure
in the flammable leakage zone of the aft fairing, causing a short
circuit. We are issuing this AD to prevent chafing between the wire
bundle and the structure of the aft fairing, which could result in
electrical arcing and subsequent ignition of flammable vapors and
possible uncontrollable fire.
DATES: This AD becomes effective October 14, 2005.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in the AD as of October 14,
2005.
ADDRESSES: You may examine the AD docket on the Internet at http://dms.dot.gov
or in person at the Docket Management Facility, U.S.
Department of Transportation, 400 Seventh Street, SW., Nassif Building,
Room PL-401, Washington, DC.
Contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle,
Washington 98124-2207, for service information identified in this AD.
FOR FURTHER INFORMATION CONTACT: Thomas Thorson, Aerospace Engineer,
Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification
Office, 1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone
(425) 917-6508; fax (425) 917-6590.
SUPPLEMENTARY INFORMATION:
Examining the Docket
You may examine the AD docket on the Internet at http://dms.dot.gov
or in person at the Docket Management Facility office between 9 a.m.
and 5 p.m., Monday through Friday, except Federal holidays. The Docket
Management Facility office (telephone (800) 647-5227) is located on the
plaza level of the Nassif Building at the street address stated in the
ADDRESSES section.
Discussion
The FAA issued a supplemental notice of proposed rulemaking (NPRM)
to amend 14 CFR part 39 to include an AD that would apply to certain
Boeing Model 757 airplanes. That supplemental NPRM was published in the
Federal Register on July 6, 2005 (70 FR 38823). That supplemental NPRM
proposed to require inspections of certain wire bundles in the left and
right engine-to-wing aft fairings for discrepancies; installation of
back-to-back p-clamps between the wire and hydraulic supply tube at the
aft end of the right-hand strut only; and associated re-routing of the
wire bundles, if necessary.
Comments
We provided the public the opportunity to participate in the
development of this AD. We have considered the comments received. The
commenters support the supplemental NPRM.
Conclusion
We have carefully reviewed the available data, including the
comments received, and determined that air safety and the public
interest require adopting the AD as proposed in the supplemental NPRM.
Costs of Compliance
There are about 618 airplanes of the affected design in the
worldwide fleet. This AD will affect about 342 airplanes of U.S.
registry. The actions will take between 16 and 44 work hours per
airplane, depending on airplane configuration, at an average labor rate
of $65 per work hour. Required parts will cost about $600 per airplane.
Based on these figures, the estimated cost of this AD on U.S. operators
is between $560,880 and $1,183,320, or between $1,640 and $3,460 per
airplane.
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
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); 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.
We prepared a regulatory evaluation of the estimated costs to
comply with this AD and placed it in the AD docket. See the ADDRESSES
section for a location to examine the regulatory evaluation.
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 Federal Aviation Administration (FAA) amends Sec. 39.13 by
adding the following new airworthiness directive (AD):
2005-18-18 Boeing: Amendment 39-14258. Docket No. FAA-2004-19540;
Directorate Identifier 2004-NM-110-AD.
Effective Date
(a) This AD becomes effective October 14, 2005.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Model 757-200, -200PF, -200CB, and -300
series airplanes; certificated in any category; equipped with Rolls-
Royce engines; as identified in Boeing Alert Service Bulletins 757-
28A0073 and 757-28A0074, both Revision 1, both dated February 24,
2005.
Unsafe Condition
(d) This AD was prompted by a report indicating that a circuit
breaker for the fuel shutoff valve tripped due to a wire that
[[Page 53556]]
chafed against the structure in the flammable leakage zone of the
aft fairing, causing a short circuit. The FAA is issuing this AD to
prevent chafing between the wire bundle and the structure of the aft
fairing, which could result in electrical arcing and subsequent
ignition of flammable vapors and possible uncontrollable fire.
Compliance
(e) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
One-Time Inspections/Related Investigative and Corrective Actions
(f) Within 60 months after the effective date of this AD, do the
actions required by paragraphs (f)(1) and (f)(2) of this AD.
(1) Accomplish the detailed inspections for discrepancies of the
wire bundles in the left and right engine-to-wing aft fairings, and
applicable and related investigative and corrective actions if
necessary, as applicable, by doing all the actions specified in the
Accomplishment Instructions of the applicable service bulletins
listed in Table 1 of this AD. Accomplish any related investigative
and corrective actions before further flight in accordance with the
applicable service bulletin.
Table 1.--Airplane Models and Service Bulletins
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Boeing Alert Service
Boeing airplanes Bulletin Revision level Date
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Model 757-200, -200CB, 200PF 757-28A0073......... Original............ November 20, 2003.
series airplanes.
Model 757-200, -200CB, 200PF 757-28A0073......... 1................... February 24, 2005.
series airplanes.
Model 757-300 series airplanes... 757-28A0074......... Original............ November 20, 2003.
Model 757-300 series airplanes... 757-28A0074......... 1................... February 24, 2005.
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(2) Install back-to-back p-clamps between the wire and hydraulic
supply tube at the aft end of the right-hand strut only; and re-
route the wire bundles, if necessary, by doing all the applicable
actions specified in the Accomplishment Instructions of Boeing Alert
Service Bulletin 757-28A0073 or 757-28A0074, both Revision 1, both
dated February 24, 2005; as applicable.
Note 1: For the purposes of this AD, a detailed inspection is:
``An intensive examination of a specific item, installation, or
assembly to detect damage, failure, or irregularity. Available
lighting is normally supplemented with a direct source of good
lighting at an intensity deemed appropriate. Inspection aids such as
mirror, magnifying lenses, etc., may be necessary. Surface cleaning
and elaborate procedures may be required.''
Alternative Methods of Compliance (AMOCs)
(g) The Manager, Seattle Aircraft Certification Office, FAA, has
the authority to approve AMOCs for this AD, if requested in
accordance with the procedures found in 14 CFR 39.19.
Material Incorporated by Reference
(h) You must use the applicable service bulletin listed in Table
2 of this AD to perform the actions that are required by this AD,
unless the AD specifies otherwise. The Director of the Federal
Register approved the incorporation by reference of these documents
in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Boeing
Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207,
for a copy of this service information. You may review copies at the
Docket Management Facility, U.S. Department of Transportation, 400
Seventh Street, SW., room PL-401, Nassif Building, Washington, DC;
on the Internet at http://dms.dot.gov; or at the National Archives
and Records Administration (NARA). For information on the
availability of this material at the NARA, call (202) 741-6030, or
go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html
.
Table 2.--Material Incorporated by Reference
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Boeing Alert Service Bulletin Revision level Date
----------------------------------------------------------------------------------------------------------------
757-28A0073.............................. Original................... November 20, 2003.
757-28A0073.............................. 1.......................... February 24, 2005.
757-28A0074.............................. Original................... November 20, 2003.
757-28A0074.............................. 1.......................... February 24, 2005.
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Issued in Renton, Washington, on August 31, 2005.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-17772 Filed 9-8-05; 8:45 am]
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