[Federal Register Volume 75, Number 98 (Friday, May 21, 2010)]
[Rules and Regulations]
[Pages 28471-28475]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-11743]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2010-0169; Directorate Identifier 2009-NM-102-AD;
Amendment 39-16305; AD 2010-10-26]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc. Model CL-600-1A11 (CL-
600), CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A, CL-601-3R, and
CL-604 Variants) Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
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SUMMARY: We are superseding an existing 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:
[[Page 28472]]
A specific batch of nose landing gear (NLG) and NLG door
selector valves, part number (P/N) 601R75146-1 (Kaiser Fluid
Technologies P/N 750006000), may have had their end caps incorrectly
lock-wired and/or incorrectly torqued during assembly. This
condition can lead to the end cap backing off, with consequent
damage to a seal and internal leakage within the valve.
Subsequently, if electrical power is transferred or removed from the
aircraft before the NLG safety pin is installed, any pressure,
including residual pressure, in the No. 3 hydraulic system can
result in an uncommanded NLG retraction.
* * * * *
We are issuing this AD to require actions to correct the unsafe
condition on these products.
DATES: This AD becomes effective June 25, 2010.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of June 25,
2010.
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: Cesar Gomez, 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) 228-7318; 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 February 25, 2010
(75 FR 8559), and proposed to supersede AD 2007-14-02, Amendment 39-
15124 (72 FR 38004, July 12, 2007).
That NPRM proposed to correct an unsafe condition for the specified
products. The MCAI states:
A specific batch of nose landing gear (NLG) and NLG door
selector valves, part number (P/N) 601R75146-1 (Kaiser Fluid
Technologies P/N 750006000), may have had their end caps incorrectly
lock-wired and/or incorrectly torqued during assembly. This
condition can lead to the end cap backing off, with consequent
damage to a seal and internal leakage within the valve.
Subsequently, if electrical power is transferred or removed from the
aircraft before the NLG safety pin is installed, any pressure,
including residual pressure, in the No. 3 hydraulic system can
result in an uncommanded NLG retraction.
Although there have been no such cases reported on the
Challenger models covered by this directive, there have been six
cases reported on the CRJ (CL600-2B19) aircraft, one of which
resulted in the collapse of the NLG at the departure gate.
This directive mandates a check of the NLG and NLG door selector
valves installed on all aircraft in the Applicability section * * *.
Depending on the results; replacement, rework and/or additional
identification of the valves may be required.
This [MCAI] revision corrects a Service Bulletin number in the
Corrective Actions table.
Notes: 1. The check is required whether or not an aircraft has
previously been checked in accordance with AD CF-2006-16R1 (now
superseded and cancelled by this AD). This is necessary since,
following the issuance of AD CF-2006-16R1, it has been determined
that the serial number (S/N) range of the affected valves requires
expansion from the previous upper limit of S/N 0767 to S/N 2126 and
the exact location of each of these additional valves is unknown.
2. Valves that have a S/N with suffix ``T'' have been
manufactured by Tactair Fluid Controls Inc. and do not require any
corrective action.
3. Valves manufactured by Kaiser Fluid Technologies, P/N
750006000, with S/N 0001 through 2126, and ink stamp ``SB750006000-
1'', have already been checked and reworked as necessary and do not
require any additional corrective action.
4. The Illustrated Parts Catalog, for each of the models covered
in the Applicability section * * *, gives instructions not to
install a valve manufactured by Kaiser Fluid Technologies, P/N
750006000, with S/N 0001 through 2126, if the marking ``SB750006000-
1'' is not ink stamped on the valve.
5. CL-600-2B16 (CL-605) aircraft, S/Ns 5701 and subsequent, are
not affected by this directive. They were delivered with valves, P/N
750006000, that have either a S/N with suffix ``T'' or have the ink
stamp marking ``SB750006000-1''.
We have clarified the applicability of this AD by removing serial
numbers 5666 through 5699 that were included in AD 2007-14-02. Those
serial numbers do not exist for the affected airplane models in this
AD. 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 about 82 products of U.S.
registry.
The actions that are required by AD 2007-14-02 and retained in this
AD take about 1 work-hour per product, at an average labor rate of $85
per work hour. Based on these figures, the estimated cost of the
currently required actions is $85 per product.
We estimate that it will take about 1 work-hour per product to
comply with the new basic requirements of this AD. The average labor
rate is $85 per work-hour. Based on these figures, we estimate the cost
of the new basic requirements of this AD to U.S. operators to be
$6,970, or $85 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
[[Page 28473]]
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
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 removing Amendment 39-15124 (72 FR
38004, July 12, 2007) and adding the following new AD:
2010-10-26 Bombardier, Inc.: Amendment 39-16305. Docket No. FAA-
2010-0169; Directorate Identifier 2009-NM-102-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective June 25,
2010.
Affected ADs
(b) This AD supersedes AD 2007-14-02, Amendment 39-15124.
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.
(1) Model CL-600-1A11 (CL-600), serial numbers 1004 through 1085
inclusive.
(2) Model CL-600-2A12 (CL-601), serial numbers 3001 through 3066
inclusive.
(3) Model CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604), serial
numbers 5001 through 5194 inclusive, and serial numbers 5301 through
5665 inclusive.
Subject
(d) Air Transport Association (ATA) of America Code 32: Landing
Gear.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
A specific batch of nose landing gear (NLG) and NLG door
selector valves, part number (P/N) 601R75146-1 (Kaiser Fluid
Technologies P/N 750006000), may have had their end caps incorrectly
lock-wired and/or incorrectly torqued during assembly. This
condition can lead to the end cap backing off, with consequent
damage to a seal and internal leakage within the valve.
Subsequently, if electrical power is transferred or removed from the
aircraft before the NLG safety pin is installed, any pressure,
including residual pressure, in the No. 3 hydraulic system can
result in an uncommanded NLG retraction.
Although there have been no such cases reported on the
Challenger models covered by this directive, there have been six
cases reported on the CRJ (CL600-2B19) aircraft, one of which
resulted in the collapse of the NLG at the departure gate.
This directive mandates a check of the NLG and NLG door selector
valves installed on all aircraft in the Applicability section * * *.
Depending on the results; replacement, rework and/or additional
identification of the valves may be required.
This [MCAI] revision corrects a Service Bulletin number in the
Corrective Actions table.
Notes: 1. The check is required whether or not an aircraft has
previously been checked in accordance with AD CF-2006-16R1 (now
superseded and cancelled by this AD). This is necessary since,
following the issuance of AD CF-2006-16R1, it has been determined
that the serial number (S/N) range of the affected valves requires
expansion from the previous upper limit of S/N 0767 to S/N 2126 and
the exact location of each of these additional valves is unknown.
2. Valves that have a S/N with suffix ``T'' have been
manufactured by Tactair Fluid Controls Inc. and do not require any
corrective action.
3. Valves manufactured by Kaiser Fluid Technologies, P/N
750006000, with S/N 0001 through 2126, and ink stamp ``SB750006000-
1'', have already been checked and reworked as necessary and do not
require any additional corrective action.
4. The Illustrated Parts Catalog, for each of the models covered
in the Applicability section * * *, gives instructions not to
install a valve manufactured by Kaiser Fluid Technologies, P/N
750006000, with S/N 0001 through 2126, if the marking ``SB750006000-
1'' is not ink stamped on the valve.
5. CL-600-2B16 (CL-605) aircraft, S/Ns 5701 and subsequent, are
not affected by this directive. They were delivered with valves, P/N
750006000, that have either a S/N with suffix ``T'' or have the ink
stamp marking ``SB750006000-1''.
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.
RESTATEMENT OF REQUIREMENTS OF AD 2007-14-02 WITH NEW SERVICE
INFORMATION BUT NO CHANGES TO ACTIONS:
Inspection and Corrective Action
(g) For airplanes having serial numbers (S/Ns) as identified in
the service bulletins specified in Table 1 of this AD, as
applicable: Within 500 flight hours or 12 months after August 16,
2007 (the effective date AD 2007-14-02), whichever occurs first,
inspect to determine the manufacturer part numbers (P/Ns) and serial
numbers of the selector valves of the nose landing gear (NLG) and
nose gear door. A review of airplane maintenance records is
acceptable in lieu of this inspection if the serial numbers of the
selector valves can be conclusively determined from that review. For
any subject selector valve having Tactair Fluid Controls P/N
750006000 and a S/N from 0001 through 0767 inclusive, before further
flight, do related investigative (including a general visual
inspection for proper installation of the lock wire of the end cap)
and corrective actions; in accordance with the applicable service
bulletin identified in Table 1 of this AD. After the effective date
of this AD, use only the applicable service bulletin specified in
Table 2 of this AD.
Table 1--Bombardier Service Bulletins
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Bombardier
Model-- service Revision-- Dated--
bulletin--
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CL-600-1A11 (CL-600) airplanes.......... 600-0721 01 February 20, 2006.
CL-600-2A12 (CL-601), and CL-600-2B16 601-0558 01 February 20, 2006.
(CL-601-3A and CL-601-3R) airplanes.
[[Page 28474]]
CL-600-2B16 (CL-604) airplanes)......... 604-32-021 02 February 20, 2007.
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Table 2--Bombardier Service Bulletins for Actions in Paragraph (g) of this AD
----------------------------------------------------------------------------------------------------------------
Bombardier
Model-- service Revision-- Dated--
bulletin--
----------------------------------------------------------------------------------------------------------------
CL-600-1A11 (CL-600) airplanes.......... 600-0721 03 February 23, 2009.
CL-600-2A12 (CL-601), and CL-600-2B16 601-0558 03 February 23, 2009.
(CL-601-3A and CL-601-3R) airplanes.
CL-600-2B16 (CL-604) airplanes.......... 604-32-021 04 February 23, 2009.
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Note 1: Operators should be aware that selector valves having
Bombardier P/N 601R75146-1 may be supplied by different
manufacturers and have different manufacturer part numbers. Only
airplanes having selector valves manufactured by Tactair Fluid
Controls, having P/N 750006000, are subject to the investigative and
corrective actions specified in paragraph (g) of this AD.
Note 2: For the purposes of this AD, a general visual inspection
is: ``A visual examination of an interior or exterior area,
installation, or assembly to detect obvious damage, failure, or
irregularity. This level of inspection is made from within touching
distance unless otherwise specified. A mirror may be necessary to
ensure visual access to all surfaces in the inspection area. This
level of inspection is made under normally available lighting
conditions such as daylight, hangar lighting, flashlight, or
droplight and may require removal or opening of access panels or
doors. Stands, ladders, or platforms may be required to gain
proximity to the area being checked.''
Note 3: The service bulletins identified in Table 1 of this AD
refer to Tactair Fluid Controls Service Bulletin SB750006000-1,
Revision A, dated September 6, 2005, as an additional source of
guidance for doing the related investigative and corrective actions
required by this AD.
Actions Accomplished According to Previous Issue of Service Bulletin
(h) Actions accomplished before August 16, 2007, in accordance
with Bombardier Service Bulletin 604-32-021, Revision 01, dated
February 20, 2006 (for Model CL-600-2B16 (CL-604) airplanes), are
considered acceptable for compliance with the corresponding actions
specified in paragraph (g) of this AD.
NEW REQUIREMENTS OF THIS AD:
Actions
(i) Unless already done, do the following actions.
(1) Within 250 flight hours or within 6 months after the
effective date of this AD, whichever occurs first: Do an inspection
of the selector valve of the NLG and the door selector valve of the
NLG to determine if P/N 601R75146-1 (Kaiser Fluid Technologies P/N
750006000) is installed, in accordance with the Accomplishment
Instructions of the applicable service bulletin specified in Table 3
of this AD. Doing the inspection required by this paragraph
terminates the inspection required by paragraph (g) of this AD.
Table 3--Bombardier Service Bulletins for Actions in Paragraph (i) of This AD
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Bombardier
Model-- service Revision-- Dated--
bulletin--
----------------------------------------------------------------------------------------------------------------
CL-600-1A11 (CL-600) airplanes.......... 600-0721 03 February 23, 2009.
CL-600-2A12 (CL-601), and CL-600-2B16 601-0558 03 February 23, 2009.
(CL-601-3A and CL-601-3R) airplanes.
CL-600-2B16 (CL-604) airplanes.......... 604-32-021 04 February 23, 2009.
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(2) If, during any inspection required by paragraph (i)(1) of
this AD, any selector valve having P/N 601R75146-1 (Kaiser Fluid
Technologies P/N 750006000) and having a S/N from 0001 through 2126
inclusive without a suffix ``T'' is found, and the valve is not ink-
stamped with the marking ``SB750006000-1'': Before further flight,
do a general visual inspection for proper installation of the lock
wire of the end cap, and replace it with a serviceable selector
valve as applicable, in accordance with the Accomplishment
Instructions of the applicable service bulletin specified in Table 3
of this AD.
(3) Doing the actions before the effective date of this AD in
accordance with the applicable service bulletin specified in Table 4
of this AD is acceptable for compliance with the corresponding
actions specified in this AD.
Table 4--Credit Service Bulletins
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Service bulletin Revision level Date
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Bombardier Service Bulletin 02 June 16, 2008.
600-0721.
Bombardier Service Bulletin 02 June 16, 2008.
601-0558.
Bombardier Service Bulletin 03 June 16, 2008.
604-32-021.
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[[Page 28475]]
FAA AD Differences
Note 4: This AD differs from the MCAI and/or service information
as follows: No differences.
Other FAA AD Provisions
(j) 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: For any reporting requirement in
this AD, under the provisions of the Paperwork Reduction Act (44
U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has
approved the information collection requirements and has assigned
OMB Control Number 2120-0056.
Related Information
(k) Refer to MCAI Canadian Airworthiness Directive CF-2009-21R1,
dated May 20, 2009; Bombardier Service Bulletin 600-0721, Revision
03, dated February 23, 2009; Bombardier Service Bulletin 601-0558,
Revision 03, dated February 23, 2009; and Bombardier Service
Bulletin 604-32-021, Revision 04, dated February 23, 2009; for
related information.
Material Incorporated by Reference
(l) You must use the service information contained in Table 5 of
this AD to do the actions required by this AD, unless the AD
specifies otherwise.
Table 5--Material Incorporated by Reference
------------------------------------------------------------------------
Document Revision Date
------------------------------------------------------------------------
Bombardier Service Bulletin 03 February 23, 2009.
600-0721.
Bombardier Service Bulletin 03 February 23, 2009.
601-0558.
Bombardier Service Bulletin 04 February 23, 2009.
604-32-021.
------------------------------------------------------------------------
(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.
Issued in Renton, Washington, on May 6, 2010.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2010-11743 Filed 5-20-10; 8:45 am]
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