[Federal Register: August 19, 2008 (Volume 73, Number 161)]
[Rules and Regulations]
[Page 48290-48292]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr19au08-4]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-0622; Directorate Identifier 2008-NM-064-AD;
Amendment 39-15642; AD 2008-17-04]
RIN 2120-AA64
Airworthiness Directives; BAE Systems (Operations) Limited
(Jetstream) Model 4101 Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for the
products listed above. This AD results from mandatory continuing
airworthiness information (MCAI) originated by an aviation authority of
another country to identify and correct an unsafe condition on an
aviation
[[Page 48291]]
product. The MCAI describes the unsafe condition as:
Resulting from the assessment of fuel tank wiring installations
required by SFAR 88 (Special Federal Aviation Regulation 88) and
equivalent JAA/EASA (Joint Aviation Authorities/European Aviation
Safety Agency) policy, BAE Systems identified * * * features in the
Jetstream 4100 where the need for design changes was apparent. * * *
Internal fuel tank wiring chafing damage, if not corrected,
could lead to ignition of fuel vapours and subsequent fuel tank
explosion.
* * * * * * *
We are issuing this AD to require actions to correct the unsafe
condition on these products.
DATES: This AD becomes effective September 23, 2008.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of September
23, 2008.
ADDRESSES: You may examine the AD docket on the Internet at http://
www.regulations.gov or in person at the U.S. Department of
Transportation, Docket Operations, M-30, West Building Ground Floor,
Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC.
FOR FURTHER INFORMATION CONTACT: Todd Thompson, Aerospace Engineer,
International Branch, ANM-116, Transport Airplane Directorate, FAA,
1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425)
227-1175; fax (425) 227-1149.
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 was published in the Federal Register on June 9, 2008 (73 FR
32488). That NPRM proposed to correct an unsafe condition for the
specified products. The MCAI states:
Resulting from the assessment of fuel tank wiring installations
required by SFAR 88 (Special Federal Aviation Regulation 88) and
equivalent JAA/EASA (Joint Aviation Authorities/European Aviation
Safety Agency) policy, BAE Systems identified two features in the
Jetstream 4100 where the need for design changes was apparent. One
of these is addressed by Service Bulletin (SB) J41-28-014 which
introduces changes to the wiring harness installations to the left
(LH) and right (RH) fuel boost pumps, identified by modification
number JM41672. In addition, to detect excessive cable lengths and
evidence of chafing damage, SB J41-28-014 provides instructions to
inspect and correct, as necessary, the internal fuel tank wiring
routed to the LH and RH high level sensors.
Internal fuel tank wiring chafing damage, if not corrected,
could lead to ignition of fuel vapours and subsequent fuel tank
explosion.
For the reason stated above, this EASA Airworthiness Directive
(AD) requires the replacement of the (LH and RH) fuel boost pump
metallic conduit assemblies with loom assemblies and the inspection
of internal fuel tank high level sensor wiring, including corrective
actions, as necessary.
Corrective actions include replacing any damaged internal fuel tank
high level sensor wiring and removing excess wiring. You may obtain
further information by examining the MCAI in the AD docket.
Comments
We gave the public the opportunity to participate in developing
this AD. We received no comments on the NPRM or on the determination of
the cost to the public.
Conclusion
We reviewed the available data and determined that air safety and
the public interest require adopting the AD as proposed.
Differences Between This AD and the MCAI or Service Information
We have reviewed the MCAI and related service information and, in
general, agree with their substance. But we might have found it
necessary to use different words from those in the MCAI to ensure the
AD is clear for U.S. operators and is enforceable. In making these
changes, we do not intend to differ substantively from the information
provided in the MCAI and related service information.
We might also have required different actions in this AD from those
in the MCAI in order to follow our FAA policies. Any such differences
are highlighted in a NOTE within the AD.
Costs of Compliance
We estimate that this AD will affect 7 products of U.S. registry.
We also estimate that it will take 47 work-hours per product to comply
with the basic requirements of this AD. The average labor rate is $80
per work-hour. Required parts will cost about $7,000 per product. Where
the service information lists required parts costs that are covered
under warranty, we have assumed that there will be no charge for these
parts. As we do not control warranty coverage for affected parties,
some parties may incur costs higher than estimated here. Based on these
figures, we estimate the cost of this AD to the U.S. operators to be
$75,320, or $10,760 per product.
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 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 this AD:
1. Is not a ``significant regulatory action'' under Executive Order
12866;
2. Is not a ``significant rule'' under the 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.
Examining the AD Docket
You may examine the AD docket on the Internet at http://
www.regulations.gov; or in person at the Docket Operations office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains the NPRM, the regulatory evaluation,
any comments received, and other information. The street address for
the Docket Operations office (telephone (800) 647-5527) is in the
ADDRESSES section. Comments will be available in the AD docket shortly
after receipt.
[[Page 48292]]
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:
2008-17-04 BAE Systems (Operations) Limited (Formerly British
Aerospace Regional Aircraft): Amendment 39-15642. Docket No. FAA-
2008-0622; Directorate Identifier 2008-NM-064-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective
September 23, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to all BAE Systems (Operations) Limited
Model Jetstream 4101 airplanes, certificated in any category, all
serial numbers.
Subject
(d) Air Transport Association (ATA) of America Code 28: Fuel.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
Resulting from the assessment of fuel tank wiring installations
required by SFAR 88 (Special Federal Aviation Regulation 88) and
equivalent JAA/EASA (Joint Aviation Authorities/European Aviation
Safety Agency) policy, BAE Systems identified two features in the
Jetstream 4100 where the need for design changes was apparent. One
of these is addressed by Service Bulletin (SB) J41-28-014 which
introduces changes to the wiring harness installations to the left
(LH) and right (RH) fuel boost pumps, identified by modification
number JM41672. In addition, to detect excessive cable lengths and
evidence of chafing damage, SB J41-28-014 provides instructions to
inspect and correct, as necessary, the internal fuel tank wiring
routed to the LH and RH high level sensors.
Internal fuel tank wiring chafing damage, if not corrected,
could lead to ignition of fuel vapours and subsequent fuel tank
explosion.
For the reason stated above, this EASA Airworthiness Directive
(AD) requires the replacement of the (LH and RH) fuel boost pump
metallic conduit assemblies with loom assemblies and the inspection
of internal fuel tank high level sensor wiring, including corrective
actions, as necessary.
Corrective actions include replacing any damaged internal fuel
tank high level sensor wiring and removing excess wiring.
Actions and Compliance
(f) Unless already done: Within 24 months after the effective
date of this AD, do the following actions.
(1) Modify the LH and RH wing fuel boost pump wiring in
accordance with paragraphs 2.B. and 2.C. of the Accomplishment
Instructions of BAE Systems (Operations) Limited Service Bulletin
J41-28-014, Revision 1, dated December 21, 2007.
(2) Inspect the LH and RH wing fuel high level sensor wiring in
accordance with paragraph 2.D. of the Accomplishment Instructions of
BAE Systems (Operations) Limited Service Bulletin J41-28-014,
Revision 1, dated December 21, 2007.
(3) When excess wiring and/or damaged wiring is found during the
inspection required by paragraph (f)(2) of this AD, before next
flight, accomplish the corrective actions as specified in paragraph
2.D. of the Accomplishment Instructions of BAE Systems (Operations)
Limited Service Bulletin J41-28-014, Revision 1, dated December 21,
2007.
FAA AD Differences
Note:
This AD differs from the MCAI and/or service information as
follows: No differences.
Other FAA AD Provisions
(g) The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager,
International Branch, ANM-116, Transport Airplane Directorate, 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: Todd
Thompson, Aerospace Engineer, International Branch, ANM-116,
Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton,
Washington 98057-3356; telephone (425) 227-1175; fax (425) 227-1149.
Before using any approved AMOC on any airplane to which the AMOC
applies, notify your appropriate principal inspector (PI) in the FAA
Flight Standards District Office (FSDO), or lacking a PI, your local
FSDO.
(2) Airworthy Product: For any requirement in this AD to obtain
corrective actions from a manufacturer or other source, use these
actions if they are FAA-approved. Corrective actions are considered
FAA-approved if they are approved by the State of Design Authority
(or their delegated agent). You are required to assure the product
is airworthy before it is returned to service.
(3) Reporting Requirements: For any reporting requirement in
this AD, under the provisions of the Paperwork Reduction Act, the
Office of Management and Budget (OMB) has approved the information
collection requirements and has assigned OMB Control Number 2120-
0056.
Related Information
(h) Refer to MCAI EASA Airworthiness Directive 2008-0041, dated
February 27, 2008; and BAE Systems (Operations) Limited Service
Bulletin J41-28-014, Revision 1, dated December 21, 2007; for
related information.
Material Incorporated by Reference
(i) You must use BAE Systems (Operations) Limited Service
Bulletin J41-28-014, Revision 1, dated December 21, 2007, 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
British Aerospace Regional Aircraft American Support, 13850 Mclearen
Road, Herndon, Virginia 20171.
(3) You may review copies at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue, SW., Renton, Washington; or 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/cfr/ibr-
locations.html.
Issued in Renton, Washington, on August 5, 2008.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E8-18810 Filed 8-18-08; 8:45 am]
BILLING CODE 4910-13-P