[Federal Register Volume 72, Number 133 (Thursday, July 12, 2007)]
[Rules and Regulations]
[Pages 38004-38006]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E7-13081]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2006-26353; Directorate Identifier 2006-NM-189-AD; 
Amendment 39-15124; AD 2007-14-02]
RIN 2120-AA64


Airworthiness Directives; Bombardier Model CL-600-1A11 (CL-600), 
CL-600-2A12 (CL-601), CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604) 
Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), 
and CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604) airplanes. This AD 
requires inspecting to identify the part number and serial number of 
the selector valves of the nose landing gear (NLG) and the nose gear 
door, and doing related investigative and corrective actions if 
necessary. This AD results from reports of uncommanded partial 
retractions of the NLG. We are issuing this AD to prevent internal 
leakage of the selector valve, which, under certain conditions, could 
result in an uncommanded retraction of the NLG with consequent damage 
to the airplane and possible serious injury to ground personnel.

DATES: This AD becomes effective August 16, 2007.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of August 16, 
2007.

ADDRESSES: You may examine the AD docket on the Internet at http://dms.dot.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.
    Contact Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, 
Station Centre-ville, Montreal, Quebec H3C 3G9, Canada, for service 
information identified in this AD.

FOR FURTHER INFORMATION CONTACT: Daniel Parrillo, 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) 228-7305; fax (516) 794-5531.

SUPPLEMENTARY INFORMATION: 

Examining the Docket

    You may examine the AD docket on the Internet at http://dms.dot.gov 
or in person at the Docket Operations office between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The Docket Operations 
office (telephone (800) 647-5527) is located on the ground floor of the 
West Building at the street address stated in the ADDRESSES section.

Discussion

    The FAA issued a supplemental notice of proposed rulemaking (NPRM) 
to amend 14 CFR part 39 to include an AD that would apply to certain 
Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), and CL-
600-2B16 (CL-601-3A, CL-601-3R, and CL-604) airplanes. That 
supplemental NPRM was published in the Federal Register on April 26, 
2007 (72 FR 20777). That supplemental NPRM proposed to require 
inspecting to identify the part number and serial number of the 
selector valves of the nose landing gear (NLG) and the nose gear door, 
and doing related investigative and corrective actions if necessary. 
That supplemental NPRM also proposed to add airplanes to the 
applicability.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. No comments have been received on the 
supplemental NPRM or on the determination of the cost to the public.

Clarification of Alternative Method of Compliance (AMOC) Paragraph

    We have revised this action to clarify the appropriate procedure 
for notifying the principal inspector before using any approved AMOC on 
any airplane to which the AMOC applies.

Conclusion

    We have carefully reviewed the available data and determined that 
air safety and the public interest require adopting the AD with the 
change described previously. We have determined that this change will 
neither increase the economic burden on any

[[Page 38005]]

operator nor increase the scope of the AD.

Costs of Compliance

    This AD affects about 502 airplanes of U.S. registry.
    The inspection to determine the manufacturer part number and serial 
number of the selector valve(s) takes about 1 work hour per airplane, 
at an average labor rate of $80 per work hour. Based on these figures, 
the estimated cost of the required inspection for U.S. operators is 
$40,160, or $80 per airplane.
    The general visual inspection of the selector valve(s), if 
accomplished, takes about 1 work hour per airplane, at an average labor 
rate of $80 per work hour. Based on these figures, the estimated cost 
of that inspection for U.S. operators is $80 per airplane.

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 have 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 that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866;
    (2) Is not a ``significant rule'' under 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. See the ADDRESSES 
section for a location to examine the regulatory evaluation.

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 Federal Aviation Administration (FAA) amends Sec.  39.13 by 
adding the following new airworthiness directive (AD):

2007-14-02 Bombardier, Inc. (Formerly Canadair): Amendment 39-15124. 
Docket No. FAA-2006-26353; Directorate Identifier 2006-NM-189-AD.

Effective Date

    (a) This AD becomes effective August 16, 2007.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Bombardier Model CL-600-1A11 (CL-600), 
CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-
604) airplanes; certificated in any category; having serial numbers 
(S/Ns) as identified in the service bulletins specified in Table 1 
of this AD, as applicable.

                 Table 1.--Bombardier Service Bulletins
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                                  Revision
       Service bulletin            level                 Date
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600-0721 (for Model CL-600-              01  February 20, 2006.
 1A11 (CL-600) airplanes).
601-0558 (for Model CL-600-              01  February 20, 2006.
 2A12 (CL-601), and CL-600-
 2B16 (CL-601-3A and CL-601-
 3R) airplanes).
604-32-021 (for Model CL-600-            02  February 20, 2007.
 2B16 (CL-604) airplanes).
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Unsafe Condition

    (d) This AD results from reports of uncommanded partial 
retractions of the nose landing gear (NLG). We are issuing this AD 
to prevent internal leakage of the selector valve, which, under 
certain conditions, could result in an uncommanded retraction of the 
NLG with consequent damage to the airplane and possible serious 
injury to ground personnel.

Compliance

    (e) 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 Corrective Actions

    (f) Within 500 flight hours or 12 months after the effective 
date of this AD, whichever occurs first, inspect to determine the 
manufacturer part numbers (P/Ns) and serial numbers of the selector 
valves of the 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.

    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 (f) 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

[[Page 38006]]

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 
service information for doing the related investigative and 
corrective actions required by this AD.

Actions Accomplished According to Previous Issue of Service Bulletin

    (g) Actions accomplished before the effective date of this AD 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 this AD.

Alternative Methods of Compliance (AMOCs)

    (h)(1) The Manager, New York Aircraft Certification Office, FAA, 
has the authority to approve AMOCs for this AD, if requested in 
accordance with the procedures found in 14 CFR 39.19.
    (2) To request a different method of compliance or a different 
compliance time for this AD, follow the procedures in 14 CFR 39.19. 
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.

Related Information

    (i) Canadian airworthiness directive CF-2006-16, dated July 6, 
2006, also addresses the subject of this AD.

Material Incorporated by Reference

    (j) You must use the applicable service bulletins identified in 
Table 2 of this AD to perform the actions that are required by this 
AD, unless the AD specifies otherwise. The Director of the Federal 
Register approved the incorporation by reference of these documents 
in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact 
Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, Station 
Centre-ville, Montreal, Quebec H3C 3G9, Canada, for a copy of this 
service information. You may review copies at the FAA, Transport 
Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or 
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/cfr/ibr-locations.html.

              Table 2.--Material Incorporated by Reference
------------------------------------------------------------------------
                                  Revision
  Bombardier Service Bulletin      level                 Date
------------------------------------------------------------------------
600-0721......................           01  February 20, 2006.
601-0558......................           01  February 20, 2006.
604-32-021....................           02  February 20, 2007.
------------------------------------------------------------------------


    Issued in Renton, Washington, on June 25, 2007.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
 [FR Doc. E7-13081 Filed 7-11-07; 8:45 am]
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