[Federal Register Volume 76, Number 16 (Tuesday, January 25, 2011)]
[Proposed Rules]
[Pages 4264-4266]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2011-1440]
[[Page 4264]]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2011-0031; Directorate Identifier 2010-NM-135-AD]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc. Model CL-600-2C10
(Regional Jet Series 700, 701, & 702), CL-600-2D15 (Regional Jet Series
705), and CL-600-2D24 (Regional Jet Series 900) Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: We propose to adopt a new airworthiness directive (AD) for the
products listed above. This proposed 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:
There have been two reported cases of failure of the MLG [main
landing gear] piston axle, P/N [part number] 49203-3 or 49203-5,
resulting from fretting between the inboard axle sleeve and axle
thrust face, damage to the protective coating and consequent stress
corrosion. In both cases, the MLG did not collapse.
* * * * *
The unsafe condition is failure of the MLG, which could adversely
affect the airplane's safe landing. The proposed AD would require
actions that are intended to address the unsafe condition described in
the MCAI.
DATES: We must receive comments on this proposed AD by March 11, 2011.
ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
Fax: (202) 493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590.
Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-40, 1200 New
Jersey Avenue, SE., Washington, DC, between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
For service information identified in this proposed AD, contact
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec
H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; e-mail
[email protected]; Internet http://www.bombardier.com. You
may review copies of the referenced 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.
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 this proposed AD, 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.
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:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include ``Docket No. FAA-2011-0031;
Directorate Identifier 2010-NM-135-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. We
will consider all comments received by the closing date and may amend
this proposed AD based on those comments.
We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this proposed AD.
Discussion
The Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian Airworthiness Directive CF-
2010-15, dated May 13, 2010 (referred to after this as ``the MCAI''),
to correct an unsafe condition for the specified products. The MCAI
states:
There have been two reported cases of failure of the MLG [main
landing gear] piston axle, P/N [part number] 49203-3 or 49203-5,
resulting from fretting between the inboard axle sleeve and axle
thrust face, damage to the protective coating and consequent stress
corrosion. In both cases, the MLG did not collapse.
In order to avoid future axle failures, which could potentially
result in gear collapse and collateral damage, this directive
mandates repetitive visual inspection [for damage and corrosion of
the protective coating] and repair as necessary, of the MLG piston
axles, P/N 49203-3 and 49203-5.
The unsafe condition is failure of the MLG, which could adversely
affect the airplane's safe landing. You may obtain further information
by examining the MCAI in the AD docket.
Relevant Service Information
Bombardier has issued Service Bulletin 670BA-32-023, Revision C,
dated January 29, 2009, including Appendix A, Revision B, dated March
5, 2008. The actions described in this service information are intended
to correct the unsafe condition identified in the MCAI.
FAA's Determination and Requirements of This Proposed AD
This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to our bilateral agreement with the State of Design Authority, we have
been notified of the unsafe condition described in the MCAI and service
information referenced above. We are proposing this AD because we
evaluated all pertinent information and determined an unsafe condition
exists and is likely to exist or develop on other products of the same
type design.
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 proposed different actions in this AD from those
in the MCAI in order to follow FAA policies. Any such differences are
highlighted in a Note within the proposed AD.
[[Page 4265]]
Costs of Compliance
Based on the service information, we estimate that this proposed AD
would affect about 380 products of U.S. registry. We also estimate that
it would take about 22 work-hours per product to comply with the basic
requirements of this proposed AD. The average labor rate is $85 per
work-hour. Based on these figures, we estimate the cost of the proposed
AD on U.S. operators to be $710,600, or $1,870 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 proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 proposed
regulation:
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 proposed AD and placed it in the AD docket.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
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]
2. The FAA amends Sec. 39.13 by adding the following new AD:
Bombardier, Inc.: Docket No. FAA-2011-0031; Directorate Identifier
2010-NM-135-AD.
Comments Due Date
(a) We must receive comments by March 11, 2011.
Affected ADs
(b) None.
Applicability
(c) This AD applies to all Bombardier, Inc. Model CL-600-2C10
(Regional Jet Series 700, 701 & 702), and CL-600-2D15 (Regional Jet
Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes;
certificated in any category.
Note 1: This AD is not applicable to piston axles having part
number (P/N) 49203-7 or P/N 49203-9, which were installed in
production on Bombardier, Inc. Model CL-600-2C10 airplanes having
serial numbers (S/Ns) 10266 and subsequent; and Models CL-600-2D15
and CL-600-2D24 airplanes having S/Ns 15155 and subsequent.
Subject
(d) Air Transport Association (ATA) of America Code 32: Landing
Gear.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
There have been two reported cases of failure of the MLG [main
landing gear] piston axle, P/N 49203-3 or 49203-5, resulting from
fretting between the inboard axle sleeve and axle thrust face,
damage to the protective coating and consequent stress corrosion. In
both cases, the MLG did not collapse.
* * * * *
The unsafe condition is failure of the MLG, which could adversely
affect the airplane's safe landing.
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.
Inspection and Repair
(g) Inspect to determine whether the airplane has a main landing
gear piston axle having P/N 49203-3 or 49203-5. A review of airplane
maintenance records is acceptable in lieu of this inspection if the
part number of the main landing gear piston axle can be conclusively
determined from that review.
(h) Except as required by paragraph (i) of this AD, if, during
the inspection required by paragraph (g) of this AD, the landing
gear piston axle is determined to have P/N 49203-3 or 49203-5: At
the applicable time specified in paragraph (h)(1), (h)(2), or (h)(3)
of this AD, do a detailed inspection for corrosion and damage of the
inboard and outboard piston axles, in accordance with the
Accomplishment Instructions of Bombardier Service Bulletin 670BA-32-
023, Revision C, dated January 29, 2009. Before further flight,
repair any corrosion or damage found, in accordance with the
Accomplishment Instructions of Bombardier Service Bulletin 670BA-32-
023, Revision C, dated January 29, 2009. Within 30 months after the
initial inspection, or within 12 months after the effective date of
this AD, whichever occurs later, do the inspection specified in this
paragraph; and repeat the inspection thereafter at intervals not to
exceed 30 months.
(1) For any piston axle that has been in service for 48 months
or more as of the effective date of this AD: Inspect within 12
months after the effective date of this AD.
(2) For any piston axle that has been in service for 24 months
or more, but less than 48 months, as of the effective date of this
AD: Inspect within 24 months after the effective date of this AD.
(3) For any piston axle that has been in service for less than
24 months as of the effective date of this AD: Inspect within 36
months after the effective date of this AD.
(i) For airplanes that have mark ``32-45'' in the MOD STATUS
field of the piston axle nameplate, or that have incorporated one of
the Bombardier repair engineering orders (REOs) listed in paragraph
1.D of Bombardier Service Bulletin 670BA-32-023, Revision C, dated
January 29, 2009: Within 12 months after the effective date of this
AD, do the inspection specified in paragraph (h) of this AD, and
repeat the inspection thereafter at the time specified in paragraph
(h) of this AD.
Terminating Action
(j) Installing a piston axle having P/N 49203-7 or P/N 49203-9
on any airplane constitutes a terminating action for the
requirements of paragraphs (h), (h)(1), (h)(2), and (h)(3) of this
AD, for that airplane.
Credit for Actions Accomplished in Accordance With Previous Service
Information
(k) Inspections and repairs accomplished before the effective
date of this AD according to any service bulletin specified in table
1 of this AD, are considered acceptable for compliance with the
inspections and repairs specified in paragraph (h) of this AD.
[[Page 4266]]
Table 1--Credit for Accomplishment of Previous Service Information
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Document Revision Date
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Bombardier Service Bulletin Original........ October 24, 2007.
670BA-32-023.
Bombardier Service Bulletin A............... January 7, 2008.
670BA-32-023.
Bombardier Service Bulletin B............... March 5, 2008.
670BA-32-023.
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FAA AD Differences
Note 2: This AD differs from the MCAI and/or service information
as follows: No differences.
Other FAA AD Provisions
(l) 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, notify
your appropriate principal inspector, or lacking a principal
inspector, the manager of the local flight standards district
office/certificate holding 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
(m) Refer to MCAI Canadian Airworthiness Directive CF-2010-15,
dated May 13, 2010; and Bombardier Service Bulletin 670BA-32-023,
Revision C, dated January 29, 2009; for related information.
Issued in Renton, Washington on January 13, 2011.
Jeffrey E. Duven,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2011-1440 Filed 1-24-11; 8:45 am]
BILLING CODE 4910-13-P