[Federal Register: December 24, 2008 (Volume 73, Number 248)]
[Rules and Regulations]
[Page 78956-78958]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr24de08-13]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-1044; Directorate Identifier 2008-NM-095-AD;
Amendment 39-15774; AD 2008-26-08]
RIN 2120-AA64
Airworthiness Directives; Saab AB, Saab Aerosystems Model 340A
(SAAB/SF340A) and SAAB 340B Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
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SUMMARY: We are adopting a new airworthiness directive (AD) for the
products listed above. This AD results from mandatory continuing
airworthiness information (MCAI)
[[Page 78957]]
originated by an aviation authority of another country to identify and
correct an unsafe condition on an aviation product. The MCAI describes
the unsafe condition as:
Several landing gear emergency extension valves have been found
seized * * *. This condition, if not corrected, could result in
malfunctioning of the landing gear release during an operational
emergency.
* * * * *
This malfunction could cause failure of the landing gear to extend
and lock in the extended position, which could result in a gear up
landing and reduced controllability of the airplane on the ground. We
are issuing this AD to require actions to correct the unsafe condition
on these products.
DATES: This AD becomes effective January 28, 2009.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of January 28,
2009.
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: Shahram Daneshmandi, Aerospace
Engineer, International Branch, ANM-116, Transport Airplane
Directorate, FAA, 1601 Lind Avenue, SW., Renton, Washington 98057-3356;
telephone (425) 227-1112; 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 September 30, 2008
(73 FR 56765). That NPRM proposed to correct an unsafe condition for
the specified products. The MCAI states:
Several landing gear emergency extension valves have been found
seized when performing checks according to the SAAB 340 Maintenance
Review Board (MRB) Report, Section F (Airworthiness Limitation
Section) task number 323106. The valves have seized due to lack of
internal lubrication. This condition, if not corrected, could result
in malfunctioning of the landing gear release during an operational
emergency.
Because the valve lubrication performance is dependant on
calendar time since last valve operation, SAAB has revised the check
to cycle the emergency release handle 5 times and amended the
interval in MRB section F from 5,000 FH [flight hours] to every 2
years.
For the reasons described above, this Airworthiness Directive
(AD) requires a functional check [for discrepancies (e.g., landing
gear does not extend, does not lock in down position)] of the
landing gear emergency extension valve at the newly established
intervals.
Malfunction of the landing gear release could cause failure of the
landing gear to extend and lock in the extended position, which could
result in a gear up landing and reduced controllability of the airplane
on the ground. The corrective action for any discrepancy that is found
is repair using a method approved by either the FAA or the European
Aviation Safety Agency (or its delegated agent). 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 about 218 products of U.S.
registry. We also estimate that it will take about 4 work-hours per
product to comply with the basic requirements of this AD. The average
labor rate is $80 per work-hour. Based on these figures, we estimate
the cost of this AD to the U.S. operators to be $69,760, or $320 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.
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,
[[Page 78958]]
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:
2008-26-08 Saab AB, Saab Aerosystems: Amendment 39-15774. Docket No.
FAA-2008-1044; Directorate Identifier 2008-NM-095-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective January
28, 2009.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Saab AB, Saab Aerosystems Model 340A
(SAAB/SF340A) and SAAB 340B airplanes, all serial numbers,
certificated in any category.
Subject
(d) Air Transport Association (ATA) of America Code 32: Landing
Gear.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
Several landing gear emergency extension valves have been found
seized when performing checks according to the SAAB 340 Maintenance
Review Board (MRB) Report, Section F (Airworthiness Limitation
Section) task number 323106. The valves have seized due to lack of
internal lubrication. This condition, if not corrected, could result
in malfunctioning of the landing gear release during an operational
emergency.
Because the valve lubrication performance is dependant on
calendar time since last valve operation, SAAB has revised the check
to cycle the emergency release handle 5 times and amended the
interval in MRB section F from 5,000 FH [flight hours] to every 2
years.
For the reasons described above, this Airworthiness Directive
(AD) requires a functional check [for discrepancies, (e.g., landing
gear does not extend, does not lock in down position)] of the
landing gear emergency extension valve at the newly established
intervals.
Malfunction of the landing gear release could cause failure of the
landing gear to extend and lock in the extended position, which
could result in a gear up landing and reduced controllability of the
airplane on the ground. The corrective action for any discrepancy
that is found is repair using a method approved by either the FAA or
the European Aviation Safety Agency (EASA) (or its delegated agent).
Actions and Compliance
(f) Unless already done, do the following actions.
(1) Within 6 months after the effective date of this AD, do a
functional check of the landing gear emergency extension valve in
accordance with the Accomplishment Instructions of SAAB Service
Bulletin 340-32-136, dated January 9, 2008. Repeat the functional
check thereafter at intervals not to exceed 24 months.
(2) If any discrepancy is found during any functional check
required by paragraph (f)(1) of this AD, before further flight,
repair using a method approved by either the Manager, International
Branch, ANM-116, Transport Airplane Directorate, FAA; or the EASA
(or its delegated agent).
FAA AD Differences
Note 1: This AD differs from the MCAI and/or service information
as follows: Although the MCAI includes a note that allows the option
of the repetitive inspections (functional checks) to be accomplished
in accordance with SAAB 340 Maintenance Review Board Report, Section
F, Revision 6, Task Number 323106, this AD does not include that
option. That document is not yet available.
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:
Shahram Daneshmandi, Aerospace Engineer, International Branch, ANM-
116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW.,
Renton, Washington 98057-3356; telephone (425) 227-1112; 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 2008-0054, dated
March 5, 2008; and SAAB Service Bulletin 340-32-136, dated January
9, 2008; for related information.
Material Incorporated by Reference
(i) You must use SAAB Service Bulletin 340-32-136, dated January
9, 2008, 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 Saab
Aircraft AB, SAAB Aerosystems, SE-581 88, Linkping, Sweden;
telephone +46 13 18 5591; fax +46 13 18 4874; e-mail
saab2000.techsupport@saabgroup.com; Internet http://
www.saabgroup.com.
(3) You may review copies of the service information that is
incorporated by reference 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 or 425-227-1152.
(4) You may also review copies of the service information 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 December 12, 2008.
Michael J. Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E8-30262 Filed 12-23-08; 8:45 am]
BILLING CODE 4910-13-P