[Federal Register Volume 73, Number 111 (Monday, June 9, 2008)]
[Proposed Rules]
[Pages 32493-32495]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-12833]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-0625; Directorate Identifier 2008-NM-069-AD]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model CL-600-2C10 (Regional
Jet Series 700, 701, & 702) Airplanes; CL-600-2D15 (Regional Jet Series
705) Airplanes; 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:
During a pre-delivery flight of a CL-600-2C10 aircraft, the AC
essential bus did not come on-line following deployment of the Air
Driven Generator (ADG). Following investigation, it was determined
that a specific batch of contactors in the ADG Power Center (ADGPC)
is susceptible to failure due to low contact pressure. * * *
The unsafe condition is malfunction of the emergency AC generation and
control system that supplies emergency AC power to essential flight
instruments, including the flap and slat system, pitch trim system, and
hydraulic pump 3B. Loss of essential flight instruments could prevent
continued safe flight and landing of the airplane. 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 July 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: Wing Chan, 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) 228-7311; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION:
[[Page 32494]]
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-2008-0625;
Directorate Identifier 2008-NM-069-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-
2008-14, dated February 19, 2008 (referred to after this as ``the
MCAI''), to correct an unsafe condition for the specified products. The
MCAI states:
During a pre-delivery flight of a CL-600-2C10 aircraft, the AC
essential bus did not come on-line following deployment of the Air
Driven Generator (ADG). Following investigation, it was determined
that a specific batch of contactors in the ADG Power Center (ADGPC)
is susceptible to failure due to low contact pressure. This
directive mandates inspection of the ADGPC and replacement of any
contactors in the suspect batch. It also prohibits future
installation of ADGPCs and contactors that have not been inspected
per this directive.
The unsafe condition is malfunction of the emergency AC generation and
control system that supplies emergency AC power to essential flight
instruments, including the flap and slat system, pitch trim system, and
hydraulic pump 3B. Loss of essential flight instruments could prevent
continued safe flight and landing of the airplane. You may obtain
further information by examining the MCAI in the AD docket.
Relevant Service Information
Bombardier has issued Service Bulletin 670BA-24-021, Revision A,
dated December 11, 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 306 products of U.S. registry. We also estimate that
it would take about 9 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 incur costs higher than estimated here. Based on these
figures, we estimate the cost of the proposed AD on U.S. operators to
be $220,320, or $720 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-2008-0625;
Directorate Identifier 2008-NM-069-AD.
[[Page 32495]]
Comments Due Date
(a) We must receive comments by July 9, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier Model CL-600-2C10 (Regional
Jet Series 700, 701, & 702) airplanes, serial numbers 10004 and
subsequent; Model CL-600-2D15 (Regional Jet Series 705) airplanes
and Model CL-600-2D24 (Regional Jet Series 900) airplanes, serial
numbers 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:
During a pre-delivery flight of a CL-600-2C10 aircraft, the AC
essential bus did not come on-line following deployment of the Air
Driven Generator (ADG). Following investigation, it was determined
that a specific batch of contactors in the ADG Power Center (ADGPC)
is susceptible to failure due to low contact pressure. This
directive mandates inspection of the ADGPC and replacement of any
contactors in the suspect batch. It also prohibits future
installation of ADGPCs and contactors that have not been inspected
per this directive.
The unsafe condition is malfunction of the emergency AC generation
and control system that supplies emergency AC power to essential
flight instruments, including the flap and slat system, pitch trim
system, and hydraulic pump 3B. Loss of essential flight instruments
could prevent continued safe flight and landing of the airplane.
Actions and Compliance
(f) Unless already done, do the following actions.
(1) For Model CL-600-2C10 airplanes having serial numbers 10004
through 10265, and Model CL-600-2D15 and CL-600-2D24 airplanes
having serial numbers 15002 through 15162: Within 5,000 flight hours
or 24 months after the effective date of this AD, whichever occurs
first, inspect for the serial number of the installed ADGPC and, as
applicable, for the serial numbers of installed contactors K117,
K147 and K153, in accordance with Part A of the Accomplishment
Instructions of Bombardier Service Bulletin 670BA-24-021, Revision
A, dated December 11, 2006. If the serial number of the ADGPC is in
the range 134 through 250, and any installed contactor has a serial
number in the range 411 through 777, before further flight, replace
the affected contactor in accordance with Part B of the service
bulletin.
(2) Previous inspection of the ADGPC, and replacement of
contactors, before the effective date of this AD, in accordance with
Bombardier Service Bulletin 670BA-24-021, dated May 30, 2005, meets
the requirements of paragraphs (f)(1) of this AD if the ADGPC has
not been replaced since accomplishment of the service bulletin.
(3) A review of the aircraft maintenance records to determine
the ADGPC and contactor serial numbers also meets the inspection
requirements of paragraph (f)(1) of this AD.
Parts Installation
(g) As of the effective date of this AD: No replacement/spare
ADGPC having part number 781GA01Y00, with a serial number in the
range 134 through 250, is permitted to be installed on any aircraft,
unless the ADGPC has been modified according to paragraph (f)(1) of
this AD.
(h) As of the effective date of this AD: No replacement/spare
ADGPC contactor having part number 995CA01Y00, with a serial number
in the range 411 through 777, is permitted to be installed on any
aircraft, unless the ADGPC contactor is identified with two labels,
as specified in Zodiac ECE Service Bulletin 995CA01Y-24-001, dated
May 3, 2005.
FAA AD Differences
Note: 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), 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: Wing Chan, Aerospace
Engineer, Systems and Flight Test Branch, ANE-172, FAA, New York
ACO, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590;
telephone (516) 228-7311; 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
(j) Refer to MCAI Canadian Airworthiness Directive CF-2008-14,
dated February 19, 2008; and Bombardier Service Bulletin 670BA-24-
021, Revision A, dated December 11, 2006; for related information.
Issued in Renton, Washington, on May 30, 2008.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E8-12833 Filed 6-6-08; 8:45 am]
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