[Federal Register Volume 76, Number 25 (Monday, February 7, 2011)]
[Rules and Regulations]
[Pages 6536-6539]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2011-2444]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2010-1108; Directorate Identifier 2010-NM-151-AD;
Amendment 39-16592; AD 2011-03-08]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc. Model CL-215-1A10 (CL-
215), CL-215-6B11 (CL-215T Variant), and CL-215-6B11 (CL-415 Variant)
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:
Seven cases of on-ground hydraulic accumulator screw cap or end
cap failure have been experienced * * * resulting in loss of the
associated hydraulic system and high-energy impact damage to
adjacent systems and structure. * * *
* * * * *
A detailed analysis of the systems and structure in the
potential line of trajectory of a failed screw cap/end cap for each
accumulator has been conducted. It has identified that the worst-
case scenarios would be impact damage to various components,
potentially resulting in fuel spillage, uncommanded flap movement,
or loss of aileron control [and consequent reduced controllability
of the airplane].
* * * * *
We are issuing this AD to require actions to correct the unsafe
condition on these products.
DATES: This AD becomes effective March 14, 2011.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of March 14,
2011.
ADDRESSES: You may examine the AD docket on the Internet at http://www.regulations.gov or in person at the
[[Page 6537]]
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: Christopher Alfano, Aerospace
Engineer, Airframe and Mechanical Systems Branch, ANE-171, FAA, New
York Aircraft Certification Office, 1600 Stewart Avenue, Suite 410,
Westbury, New York 11590; telephone (516) 228-7340; 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 November 9, 2010 (75
FR 68728). That NPRM proposed to correct an unsafe condition for the
specified products. The MCAI states:
Seven cases of on-ground hydraulic accumulator screw cap or end
cap failure have been experienced on CL-600-2B19 (CRJ) aircraft,
resulting in loss of the associated hydraulic system and high-energy
impact damage to adjacent systems and structure. To date, the lowest
number of flight cycles accumulated at the time of failure has been
6991.
Although there have been no failures to date on any CL-215-1A10
(CL-215) or CL-215-6B11 (CL-215T and CL-415) aircraft, similar
accumulators, Part Number (P/N) 08-8423-010 (MS28700-3), to those
installed on the CL-600-2B19, are installed on the aircraft listed
in the Applicability section of this directive [MCAI].
A detailed analysis of the systems and structure in the
potential line of trajectory of a failed screw cap/end cap for each
accumulator has been conducted. It has identified that the worst-
case scenarios would be impact damage to various components,
potentially resulting in fuel spillage, uncommanded flap movement,
or loss of aileron control [and consequent reduced controllability
of the airplane].
This directive [MCAI] mandates repetitive [ultrasonic]
inspections of the accumulators for cracks and replacement of any
accumulator in which a crack is detected.
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 6 products of U.S. registry.
We also estimate that it will take about 7 work-hours per product to
comply with the basic requirements of this AD. The average labor rate
is $85 per work-hour. Based on these figures, we estimate the cost of
this AD to the U.S. operators to be $3,570, or $595 per product.
In addition, we estimate that any necessary follow-on actions would
take about 6 work-hours and require parts costing $4,055, for a cost of
$4,565 per product. We have no way of determining the number of
products that may need these actions.
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
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:
2011-03-08 Bombardier, Inc.: Amendment 39-16592. Docket No. FAA-
2010-1108; Directorate Identifier 2010-NM-151-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective March
14, 2011.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier, Inc. airplanes, certificated
in any category, identified in paragraphs (c)(1), (c)(2), and (c)(3)
of this AD.
[[Page 6538]]
(1) Model CL-215-1A10 (CL-215) airplanes, serial numbers 1001
through 1990 inclusive;
(2) Model CL-215-6B11 (CL-215T Variant) airplanes, serial
numbers 1056 through 1125 inclusive;
(3) Model CL-215-6B11 (CL-415 Variant) airplanes, serial numbers
2001 through 2990 inclusive.
Subject
(d) Air Transport Association (ATA) of America Code 27: Flight
controls; and 32: Landing gear.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
Seven cases of on-ground hydraulic accumulator screw cap or end
cap failure have been experienced * * * resulting in loss of the
associated hydraulic system and high-energy impact damage to
adjacent systems and structure. * * *
* * * * *
A detailed analysis of the systems and structure in the
potential line of trajectory of a failed screw cap/end cap for each
accumulator has been conducted. It has identified that the worst-
case scenarios would be impact damage to various components,
potentially resulting in fuel spillage, uncommanded flap movement,
or loss of aileron control [and consequent reduced controllability
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.
Inspection to Determine Flight Hours
(g) Within 50 flight hours after the effective date of this AD,
inspect to determine the number of flight cycles accumulated by each
of the applicable accumulators (i.e., brake, aileron, elevator, and
rudder accumulators) having part number (P/N) 08-8423-010 (MS28700-
3) installed on the airplane. A review of airplane maintenance
records is acceptable in lieu of this inspection if the number of
flight cycles accumulated can be conclusively determined from that
review.
Initial Ultrasonic Inspection
(h) For Model CL-215-1A10 (CL-215) and CL-215-6B11 (CL-215T)
airplanes: do an ultrasonic inspection for cracking of the
accumulator at the applicable time specified in paragraph (h)(1) or
(h)(2) of this AD, in accordance with Part B of the Accomplishment
Instructions of the applicable service bulletin listed in table 1 of
this AD.
Table 1--Service Bulletins
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Use Bombardier
For model-- Service Bulletin-- Revision-- Dated--
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CL-215-1A10 (CL-215)...................... 215-541 1 March 12, 2010.
CL-215-6B11 (CL-215T)..................... 215-3155 1 March 12, 2010.
CL-600-6B11 (CL-415)...................... 215-4414 1 March 12, 2010.
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(1) For any accumulator on which the inspection required by
paragraph (g) of this AD shows an accumulation of more than 875
total flight cycles or on which it is not possible to determine the
number of total accumulated flight cycles, do the inspection within
125 flight cycles after the effective date of this AD.
(2) For any accumulator on which the inspection required by
paragraph (g) of this AD shows an accumulation of 875 total flight
cycles or fewer, do the inspection before the accumulation of 1,000
flight cycles on the accumulator.
(i) For Model CL-215-6B11 (CL-415) airplanes, do an ultrasonic
inspection for cracking of the accumulator at the applicable time
specified in paragraph (i)(1) or (i)(2) of this AD, in accordance
with Part B of the Accomplishment Instructions of the applicable
service bulletin listed in Table 1 of this AD.
(1) For any accumulator on which the inspection required by
paragraph (g) of this AD shows an accumulation of more than 750
flight cycles or on which it is not possible to determine the number
of total accumulated flight cycles, do the inspection within 250
flight cycles after the effective date of this AD.
(2) For any accumulator on which the inspection required by
paragraph (g) of this AD shows an accumulation of 750 total flight
cycles or fewer, do the inspection before the accumulation of 1,000
flight cycles on the accumulator.
Repetitive Inspections
(j) If no cracking is found during any inspection required by
paragraph (h) or (i) of this AD, repeat the inspection thereafter at
intervals not to exceed 750 flight cycles.
(k) If any cracking is found during any inspection required by
paragraph (h) or (i) of this AD, before further flight, replace the
accumulator with a serviceable accumulator, in accordance with Part
B of the Accomplishment Instructions of the applicable service
bulletin listed in Table 1 of this AD. Doing the replacement does
not end the inspection requirements of this AD. Repeat the
inspections required by paragraph (h) or (i) of this AD at intervals
not to exceed 750 flight cycles.
Parts Installation
(l) As of the effective date of this AD, no person may install
an accumulator (P/N) 08-8423-010 (MS28700-3) on any airplane unless
the accumulator has been inspected in accordance with the
requirements of this AD.
Credit for Actions Accomplished in Accordance With Previous Service
Information
(m) Inspections accomplished before the effective date of this
AD in accordance with the applicable service bulletin listed in
Table 2 of this AD are considered acceptable for compliance with the
corresponding action specified in this AD.
Table 2--Credit Service Bulletins
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Use Bombardier
For model-- Service Bulletin-- Dated--
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CL-215-1A10 (CL-215)......... 215-541 July 9, 2009.
CL-215-6B11 (CL-215T)........ 215-3155 July 9, 2009.
CL-600-6B11 (CL-415)......... 215-4414 July 9, 2009.
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FAA AD Differences
Note 1: This AD differs from the MCAI and/or service information
as follows:
No differences.
Other FAA AD Provisions
(n) 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
[[Page 6539]]
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
(o) Refer to MCAI Canadian Airworthiness Directive CF-2009-42R1,
dated May 14, 2010; and the service bulletins listed in table 1 of
this AD; for related information.
Material Incorporated by Reference
(p) You must use the service information contained in Table 3 of
this AD 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., 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.
(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.
Table 3--Material Incorporated by Reference
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Document Revision Date
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Bombardier Service Bulletin 215- 1 March 12, 2010.
541.
Bombardier Service Bulletin 215- 1 March 12, 2010.
3155.
Bombardier Service Bulletin 215- 1 March 12, 2010.
4414.
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Issued in Renton, Washington, on January 26, 2011.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2011-2444 Filed 2-4-11; 8:45 am]
BILLING CODE 4910-13-P