[Federal Register Volume 75, Number 248 (Tuesday, December 28, 2010)]
[Rules and Regulations]
[Pages 81420-81421]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-32325]
[[Page 81420]]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2010-0805; Directorate Identifier 2010-NM-042-AD;
Amendment 39-16553; AD 2010-26-13]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc. Model DHC-8-300 Series
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) 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 cases of aileron terminal quadrant support brackets that
were manufactured using sheet metal have been found cracked on DHC-8
Series 300 aircraft. Investigation revealed that the failure of the
support bracket was due to fatigue. Failure of the aileron terminal
quadrant support bracket could result in an adverse reduction of
aircraft roll control.
* * * * *
These conditions could result in loss of control of the airplane. We
are issuing this AD to require actions to correct the unsafe condition
on these products.
DATES: This AD becomes effective February 1, 2011.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of February 1,
2011.
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: Craig Yates, Aerospace Engineer,
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury,
New York 11590; telephone (516) 228-7355; fax (516) 794-5531.
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 August 25, 2010 (75
FR 52290). That NPRM proposed to correct an unsafe condition for the
specified products. The MCAI states:
Several cases of aileron terminal quadrant support brackets that
were manufactured using sheet metal have been found cracked on DHC-8
Series 300 aircraft. Investigation revealed that the failure of the
support bracket was due to fatigue. Failure of the aileron terminal
quadrant support bracket could result in an adverse reduction of
aircraft roll control.
This directive mandates the replacement of the aileron terminal
quadrant support bracket with a new and improved machined part.
These conditions could result in loss of control of the airplane. The
required actions include installing new aileron input quadrant support
brackets. 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 considered the comment received. Air Line Pilots
Association, International (ALPA), supports the NPRM.
Conclusion
We reviewed the available data, including the comment received, 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 13 products of U.S. registry.
We also estimate that it will take about 72 work-hours per product to
comply with the basic requirements of this AD. The average labor rate
is $85 per work-hour. Required parts will cost about $1,080 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 $93,600, or $7,200 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.
[[Page 81421]]
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,
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:
2010-26-13 Bombardier, Inc.: Amendment 39-16553. Docket No. FAA-
2010-0805; Directorate Identifier 2010-NM-042-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective February
1, 2011.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier, Inc. Model DHC-8-301, -311,
and -315 airplanes, certificated in any category; having serial
numbers 100 through 530 inclusive.
Subject
(d) Air Transport Association (ATA) of America Code 57: Wings.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
Several cases of aileron terminal quadrant support brackets that
were manufactured using sheet metal have been found cracked on DHC-8
Series 300 aircraft. Investigation revealed that the failure of the
support bracket was due to fatigue. Failure of the aileron terminal
quadrant support bracket could result in an adverse reduction of
aircraft roll control.
* * * * *
These conditions could result in loss of control of the airplane.
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.
Actions
(g) For airplanes with an aileron terminal quadrant support
bracket having part number (P/N) 85711569: At the applicable times
specified in paragraph (g)(1) or (g)(2) of this AD, install a new
aileron input quadrant support bracket by incorporating MODSUM
8Q101250, in accordance with the Accomplishment Instructions of
Bombardier Service Bulletin 8-57-43, Revision B, dated October 7,
2009.
(1) For airplanes that have accumulated 30,000 total flight
hours or more as of the effective date of this AD: Within 3,000
flight hours after the effective date of this AD.
(2) For airplanes that have accumulated less than 30,000 total
flight hours as of the effective date of this AD: Before the
accumulation of 33,000 total flight cycles or within 6,000 flight
hours after the effective date of this AD, whichever occurs first.
Credit for Actions Accomplished in Accordance With Previous Service
Information
(h) Doing the installation by incorporating MODSUM 8Q101250 is
also acceptable for compliance with the requirements of paragraph
(g) of this AD if done before the effective date of this AD in
accordance with Bombardier Service Bulletin 8-57-43, dated August 9,
2002; or Bombardier Service Bulletin 8-57-43, Revision A, dated
January 17, 2003.
FAA AD Differences
Note 1: This AD differs from the MCAI and/or service information
as follows: No differences.
Other FAA AD Provisions
(i) The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, New
York Aircraft Certification Office (ACO), ANE-170, 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: Program
Manager, Continuing Operational Safety, FAA, New York ACO, 1600
Stewart Avenue, Suite 410, Westbury, New York, 11590; telephone 516-
228-7300; fax 516-794-5531. 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.
(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: A federal agency may not conduct or
sponsor, and a person is not required to respond to, nor shall a
person be subject to a penalty for failure to comply with a
collection of information subject to the requirements of the
Paperwork Reduction Act unless that collection of information
displays a current valid OMB Control Number. The OMB Control Number
for this information collection is 2120-0056. Public reporting for
this collection of information is estimated to be approximately 5
minutes per response, including the time for reviewing instructions,
completing and reviewing the collection of information. All
responses to this collection of information are mandatory. Comments
concerning the accuracy of this burden and suggestions for reducing
the burden should be directed to the FAA at: 800 Independence Ave.,
SW., Washington, DC 20591, Attn: Information Collection Clearance
Officer, AES-200.
Related Information
(j) Refer to MCAI Canadian Airworthiness Directive CF-2009-45,
dated December 11, 2009; and Bombardier Service Bulletin 8-57-43,
Revision B, dated October 7, 2009; for related information.
Material Incorporated by Reference
(k) You must use Bombardier Service Bulletin 8-57-43, Revision
B, dated October 7, 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
Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt
Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416-375-4000;
fax 416-375-4539; e-mail [email protected]; Internet
http://www.bombardier.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 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 December 16, 2010.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2010-32325 Filed 12-27-10; 8:45 am]
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