[Federal Register Volume 70, Number 66 (Thursday, April 7, 2005)]
[Proposed Rules]
[Pages 17620-17621]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-6916]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2004-19563; Directorate Identifier 2003-NM-10-AD]
RIN 2120-AA64


Airworthiness Directives; Bombardier Model CL-600-2B16 (CL-604) 
Series Airplanes

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

ACTION: Proposed rule; withdrawal.

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SUMMARY: The FAA withdraws a notice of proposed rulemaking (NPRM) that 
proposed a new airworthiness directive (AD) for certain Bombardier 
Model CL-600-2B16 (CL-604) series airplanes. The proposed AD would have 
required replacing the side-brace fitting shafts of the main landing 
gear (MLG) with new, improved side-brace fitting shafts; inspecting for 
corrosion of the MLG side-brace fitting shafts; and replacing the nut, 
washer, and cotter pin of the MLG side-brace fitting shafts with new 
parts; as applicable. Since the proposed AD was issued, we have 
received new data that the actions that would have been required by the 
proposed AD have already been accomplished on all of the affected 
airplanes. Accordingly, the proposed AD is withdrawn.

[[Page 17621]]


ADDRESSES: You can examine the contents of this 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., 
room PL-401, on the plaza level of the Nassif Building, Washington, DC. 
This docket number is FAA-2004-19563; the directorate identifier for 
this docket is 2003-NM-10-AD.

FOR FURTHER INFORMATION CONTACT: Serge Napoleon, Aerospace Engineer, 
Airframe and Propulsion Branch, ANE-171, FAA, New York Aircraft 
Certification Office, 1600 Stewart Avenue, suite 410, Westbury, New 
York 11590; telephone (516) 228-7312; fax (516) 794-5531.

SUPPLEMENTARY INFORMATION: 

Discussion

    We proposed to amend part 39 of the Federal Aviation Regulations 
(14 CFR part 39) with a notice of proposed rulemaking (NPRM) for a new 
AD for certain Bombardier Model CL-600-2B16 (CL-604) series airplanes. 
That NPRM was published in the Federal Register on November 9, 2004 (69 
FR 64869). The NPRM would have required replacing the side-brace 
fitting shafts of the main landing gear (MLG) with new, improved side-
brace fitting shafts; inspecting for corrosion of the MLG side-brace 
fitting shafts; and replacing the nut, washer, and cotter pin of the 
MLG side-brace fitting shafts with new parts; as applicable. The NPRM 
was prompted by the discovery of fractures of the MLG side-brace 
fitting shafts caused by corrosion on the forward side of the side-
brace fitting shafts. The proposed actions were intended to prevent 
fracture of the MLG side-brace fitting shafts, which could result in 
collapse of the MLG.

Actions Since NPRM Was Issued

    Since we issued the NPRM, the airplane manufacturer has informed us 
that all airplanes identified in the applicability section of the NPRM 
have already accomplished the actions specified in Bombardier Alert 
Service Bulletin A604-32-018, Revision 01, dated February 22, 2002, 
which would have been required by the proposed AD. Transport Canada 
Civil Aviation (TCCA), which is the airworthiness authority for Canada, 
has also confirmed that the proposed requirements have already been 
accomplished on all affected airplanes.

FAA's Conclusions

    Upon further consideration, we have determined that it is 
unnecessary to issue the proposed AD. Accordingly, the NPRM is 
withdrawn.
    Withdrawal of the NPRM does not preclude the FAA from issuing 
another related action or commit the FAA to any course of action in the 
future.

Regulatory Impact

    Since this action only withdraws an NPRM, it is neither a proposed 
nor a final rule and therefore is not covered under Executive Order 
12866, the Regulatory Flexibility Act, or DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979).

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

The Withdrawal

    Accordingly, we withdraw the NPRM, Docket No. FAA-2004-19563, 
Directorate Identifier 2003-NM-10-AD, which was published in the 
Federal Register on November 9, 2004 (69 FR 64869).

    Issued in Renton, Washington, on March 31, 2005.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-6916 Filed 4-6-05; 8:45 am]
BILLING CODE 4910-13-P