Airworthiness Directives; 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

[Federal Register Volume 71, Number 13 (Friday, January 20, 2006)]
[Rules and Regulations]
[Pages 3212-3214]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 06-467]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2005-22917; Directorate Identifier 2005-NM-157-AD; 
Amendment 39-14456; AD 2006-02-04]
RIN 2120-AA64


Airworthiness Directives; 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

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

ACTION: Final rule.

-----------------------------------------------------------------------

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, & CL-604) airplanes. This AD 
requires modifying the rudder balance spring assembly by installing a 
new adjustable balance spring, and rigging the assembly to suit the 
rudder of each airplane. This AD results from production inspections 
that showed that the spring assembly that controls rudder balance may 
not have the correct pre-load on some airplanes. We are issuing this AD 
to prevent uncommanded yaw movements and consequent reduced 
controllability of the airplane.

DATES: This AD becomes effective February 24, 2006.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of February 24, 
2006.

ADDRESSES: You may examine the AD docket on the Internet at http://dms.dot.gov or in person at the Docket Management Facility, U.S. 
Department of Transportation, 400 Seventh Street, SW., Nassif Building, 
room PL-401, 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 airworthiness directive (AD) docket on the 
Internet at http://dms.dot.gov or in person at the Docket Management 
Facility office between 9 a.m. and 5 p.m., Monday through Friday, 
except Federal holidays. The Docket Management Facility office 
(telephone (800) 647-5227) is located on the plaza level of the Nassif 
Building at the street address stated in the ADDRESSES section.

Discussion

    The FAA issued a 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 NPRM was published in 
the Federal Register on November 10, 2005 (70 FR 68377). That NPRM 
proposed to require modifying the rudder balance spring assembly by 
installing a new adjustable balance spring, and rigging the assembly to 
suit the rudder of each airplane.

Comments

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

Explanation of Change to Related Information

    We have revised paragraph (k) of this AD to include reference to 
Canadian airworthiness directive CF-2005-21R1, dated November 23, 2005, 
which was issued to revise the applicability of the affected airplanes. 
This change was reflected in the applicability of the proposed AD.

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 operator nor increase the 
scope of the AD.

Costs of Compliance

    This AD will affect about 501 airplanes of U.S. registry. The 
required actions will take about 12 work hours per airplane, at an 
average labor rate of $65 per work hour. Required parts will cost about 
$1,749 per airplane. Based on these figures, the estimated cost of the 
AD for U.S. operators is $1,267,029, or $2,529 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

[[Page 3213]]

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):

2006-02-04 Bombardier, Inc. (Formerly Canadair): Amendment 39-14456. 
Docket No. FAA-2005-22917; Directorate Identifier 2005-NM-157-AD.

Effective Date

    (a) This AD becomes effective February 24, 2006.

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; as identified in Table 
1 of this AD.

                                  Table 1.--Affected Airplanes by Serial Number
----------------------------------------------------------------------------------------------------------------
               Bombardier airplane model                                 Affected serial  numbers
----------------------------------------------------------------------------------------------------------------
CL-600-1A11 (CL-600)...................................  1004 through 1085 inclusive.
CL-600-2A12 (CL-601)...................................  3001 through 3066 inclusive.
CL-600-2B16 (CL-601-3A and CL-601-3R)..................  5001 through 5194 inclusive.
CL-600-2B16 (CL-604)...................................  5301 through 5564 inclusive.
----------------------------------------------------------------------------------------------------------------

Unsafe Condition

    (d) This AD results from production inspections that showed that 
the spring assembly that controls rudder balance may not have the 
correct pre-load on some airplanes. We are issuing this AD to 
prevent uncommanded yaw movements and consequent reduced 
controllability of the airplane.

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.

Service Bulletin Reference

    (f) The term ``service bulletin,'' as used in this AD, means the 
Accomplishment Instructions of the applicable service bulletin in 
Table 2 of this AD.

                       Table 2.--Service Bulletins
------------------------------------------------------------------------
                                 Bombardier
  Bombardier airplane model   service bulletin
-----------------------------------------------
CL-600-1A11 (CL-600)........  600-0714,
                               including
                               Appendix 1 and
                               excluding
                               Appendix 2,
                               dated April 4,
                               2003..
CL-600-2A12 (CL-601), and CL- (601-0549,
 600-2B16 (CL-601-3A and CL-   including
 601-3R).                      Appendix 1 and
                               excluding
                               Appendix 2,
                               dated April 4,
                               2003..
CL-600-2B16 (CL-604)........  604-27-013,
                               including
                               Appendix 1 and
                               excluding
                               Appendix 2,
                               dated April 4,
                               2003..
------------------------------------------------------------------------

Modification and Rigging

    (g) Within 12 months after the effective date of this AD: Modify 
and rig the adjustable rudder balance spring assembly for the rudder 
control surface, in accordance with the Accomplishment Instructions 
of the applicable service bulletin specified in Table 2 of this AD. 
Where the service bulletin specifies contacting Bombardier for 
instructions on making certain adjustments: Before further flight, 
adjust according to a method approved by the Manager, New York 
Aircraft Certification Office (ACO), FAA; or Transport Canada Civil 
Aviation (TCCA) (or its delegated agent).

No Reporting Required

    (h) Although the service bulletins referenced in this AD specify 
to submit certain information to the manufacturer, this AD does not 
include that requirement.

Parts Installation

    (i) After the effective date of this AD, no person may install 
on any airplane a rudder balance spring assembly unless it has been 
modified and rigged in accordance with paragraph (g) of this AD.

Alternative Methods of Compliance (AMOCs)

    (j)(1) The Manager, New York ACO, has the authority to approve 
AMOCs for this AD, if requested in accordance with the procedures 
found in 14 CFR 39.19.
    (2) Before using any AMOC approved in accordance with Sec.  
39.19 on any airplane to which the AMOC applies, notify the 
appropriate principal inspector in the FAA Flight Standards 
Certificate Holding District Office.

Related Information

    (k) Canadian airworthiness directives CF-2005-21, dated June 23, 
2005, and CF-2005-21R1, dated November 23, 2005, also address the 
subject of this AD.

[[Page 3214]]

Material Incorporated by Reference

    (1) You must use the service documents identified in Table 3 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 Docket Management 
Facility, U.S. Department of Transportation, 400 Seventh Street, 
SW., room PL-401, Nassif Building, Washington, DC; on the Internet 
at http://dms.dot.gov; or at the National Archives and Records 
Administration (NARA). For information on the availability of this 
material at the 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
------------------------------------------------------------------------
     Bombardier service bulletin                      Date
------------------------------------------------------------------------
600-0714, including Appendix 1 and     April 4, 2003.
 excluding Appendix 2.
601-0549, including Appendix 1 and     April 4, 2003.
 excluding Appendix 2.
604-27-013, including Appendix 1 and   April 4, 2003.
 excluding Appendix 2.
------------------------------------------------------------------------


    Issued in Renton, Washington, on January 10, 2006.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 06-467 Filed 1-19-06; 8:45 am]
BILLING CODE 4910-13-P

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