[Federal Register: May 8, 2008 (Volume 73, Number 90)]
[Proposed Rules]
[Page 26045-26047]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr08my08-26]
[[Page 26045]]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-0522; Directorate Identifier 2008-NM-041-AD]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model CL-600-2C10 (Regional
Jet Series 700, 701, & 702) Airplanes, Model CL-600-2D15 (Regional Jet
Series 705) Airplanes, and Model 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:
Following in-flight test deployments on CL-600-2B19 aircraft,
several Air-Driven generators (ADGs) failed to come on-line.
Investigation revealed that, as a result of a wiring anomaly that
had not been detected during ADG manufacture, a short circuit was
possible between certain internal wires and their metallic over-
braided shields, which could result in the ADG not providing power
when deployed. * * *
The unsafe condition is that failure of the ADG could lead to loss of
several functions essential for safe flight. 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 June 9, 2008.
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.
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: Fabio Buttitta, Aerospace Engineer,
Systems and Flight Test Branch, ANE-172, FAA, New York Aircraft
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New
York 11590; telephone (516) 228-7303; 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-2008-0522;
Directorate Identifier 2008-NM-041-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
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian Airworthiness Directive CF-
2008-10, dated February 5, 2008 (referred to after this as ``the
MCAI''), to correct an unsafe condition for the specified products. The
MCAI states:
Following in-flight test deployments on CL-600-2B19 aircraft,
several Air-Driven generators (ADGs) failed to come on-line.
Investigation revealed that, as a result of a wiring anomaly that
had not been detected during ADG manufacture, a short circuit was
possible between certain internal wires and their metallic over-
braided shields, which could result in the ADG not providing power
when deployed. This directive mandates checking of the ADG and
modification of the ADG internal wiring, if required. It also
prohibits future installation of unmodified ADGs.
The unsafe condition is that failure of the ADG could lead to loss of
several functions essential for safe flight. You may obtain further
information by examining the MCAI in the AD docket.
Relevant Service Information
Bombardier has issued Service Bulletin 670BA-24-015, Revision A,
dated December 18, 2006. 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.
Costs of Compliance
Based on the service information, we estimate that this proposed AD
would affect about 304 products of U.S. registry. We also estimate that
it would take about 5 work hours per product to comply with the basic
requirements of this proposed AD. The average labor rate is $80 per
work hour. Required parts would cost about $0 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 costs.
As we do not control warranty coverage for affected parties, some
parties may
[[Page 26046]]
incur costs higher than estimated here. Based on these figures, we
estimate the cost of the proposed AD on U.S. operators to be $121,600,
or $400 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, 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. (Formerly Canadair): Docket No. FAA-2008-0522;
Directorate Identifier 2008-NM-041-AD.
Comments Due Date
(a) We must receive comments by June 9, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier Model CL-600-2C10 (Regional
Jet Series 700, 701, & 702) airplanes, having serial numbers (SNs)
10004 and subsequent; and Model CL-600-2D15 (Regional Jet Series
705) airplanes and Model CL-600-2D24 (Regional Jet Series 900)
airplanes, having SN 15002 and subsequent; certificated in any
category.
Subject
(d) Air Transport Association (ATA) of America Code 24:
Electrical Power.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
Following in-flight test deployments on CL-600-2B19 aircraft,
several Air-Driven generators (ADGs) failed to come on-line.
Investigation revealed that, as a result of a wiring anomaly that
had not been detected during ADG manufacture, a short circuit was
possible between certain internal wires and their metallic over-
braided shields, which could result in the ADG not providing power
when deployed. This directive mandates checking of the ADG and
modification of the ADG internal wiring, if required. It also
prohibits future installation of unmodified ADGs.
The unsafe condition is that failure of the ADG could lead to loss
of several functions essential for safe flight.
Actions and Compliance
(f) Unless already done, do the following actions.
(1) For airplanes identified in Table 1 of this AD: Within 12
months after the effective date of this AD, inspect the serial
number of the installed ADG. A review of airplane maintenance
records is acceptable in lieu of this inspection if the serial
number of the ADG can be conclusively determined from that review.
Table 1.--Bombardier Airplane Identification
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Model Serial No.
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CL-600-2C10 airplanes.......... 10004 through 10265.
CL-600-2D15 and CL-600-2D24 15002 through 15162.
airplanes.
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(i) If the serial number is not listed in paragraph 1.A of
Bombardier Service Bulletin 670BA-24-015, Revision A, dated December
18, 2006, no further action is required by this AD.
(ii) If the serial number is listed in paragraph 1.A of
Bombardier Service Bulletin 670BA-24-015, Revision A, dated December
18, 2006, before further flight, inspect the ADG identification
plate and, as applicable, do the actions of paragraph (f)(1)(ii)(A)
or (f)(1)(ii)(B) of this AD.
(A) If the identification plate is marked with the symbol ``24-
2'', no further action is required by this AD.
(B) If the identification plate is not marked with the symbol
``24-2'', modify the ADG wiring in accordance with the
Accomplishment Instructions of the service bulletin.
(2) For all Model CL-600-2C10 airplanes having SN 10004 and
subsequent, and Model CL-600-2D15 and CL-600-2D24 airplanes having
SN 15002 and subsequent: As of the effective date of this AD, no ADG
part number 604-90800-19 (761339E), having SN 0101 through 0132,
0134 through 0167, 0169 through 0358, 0360 through 0438, 0440
through 0456, 0458 through 0467, 0469, 0471 through 0590, 0592
through 0597, 0599 through 0745, 0747 through 1005, or 1400 through
1439, may be installed on any airplane, unless the identification
plate of the ADG is identified with the symbol ``24-2'' (refer to
Hamilton Sundstrand Service Bulletin ERPS10AG-24-2 for further
information).
(3) Actions done before the effective date of this AD according
to Bombardier Service Bulletin 670BA-24-015, dated May 17, 2004, are
considered acceptable for compliance with the corresponding actions
specified in this AD, provided the ADG has not been replaced since
those actions were done.
FAA AD Differences
Note 1: 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:
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(1) Alternative Methods of Compliance (AMOCs): The Manager, New
York Aircraft Certification Office, 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: Fabio Buttitta, Aerospace
Engineer, Systems and Flight Test Branch, ANE-172, FAA, New York
Aircraft Certification Office, 1600 Stewart Avenue, Suite 410,
Westbury, New York 11590; telephone (516) 228-7303; fax (516) 794-
5531. 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 Canadian Airworthiness Directive CF-2008-10, dated
February 5, 2008, and Bombardier Service Bulletin 670BA-24-015,
Revision A, dated December 18, 2006, for related information.
Issued in Renton, Washington, on April 25, 2008.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E8-10219 Filed 5-7-08; 8:45 am]
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