[Federal Register Volume 60, Number 176 (Tuesday, September 12, 1995)]
[Proposed Rules]
[Page 47314]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-22592]



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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 95-NM-40-AD]


Airworthiness Directives; Boeing Model 737 Series Airplanes 
Equipped With BFGoodrich Main Landing Gear Brake Assemblies

AGENCY: Federal Aviation Administration, DOT.

ACTION: Proposed rule; withdrawal.

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SUMMARY: This action withdraws a notice of proposed rulemaking (NPRM) 
that proposed a new airworthiness directive (AD), applicable to certain 
Boeing Model 737 series airplanes. That action would have required 
inspection of certain brake assemblies to determine the part number of 
the torque plates, measurement of the amount of wear remaining on the 
brake wear pin indicator, and removal of brake assemblies on which 
misidentified torque plates were installed and replacement with 
serviceable brakes. Since the issuance of the NPRM, the Federal 
Aviation Administration (FAA) has received new data indicating that all 
misidentified torque plates have been removed from airplanes and spare 
part inventories. Accordingly, the proposed rule is withdrawn.

FOR FURTHER INFORMATION CONTACT: David M. Herron, Aerospace Engineer, 
Systems and Equipment Branch, ANM-130S, FAA, Transport Airplane 
Directorate, Seattle Aircraft Certification Office, 1601 Lind Avenue, 
SW., Renton, Washington; 98055-4056; telephone (206) 227-2672; fax 
(206) 227-1181.

SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal 
Aviation Regulations (14 CFR part 39) to add a new airworthiness 
directive (AD), applicable to certain Boeing Model 737 series 
airplanes, was published in the Federal Register as a Notice of 
Proposed Rulemaking (NPRM) on April 17, 1995 (60 FR 19181). The 
proposed rule would have required a one-time inspection of certain 
brake assemblies to determine the part number of the torque plates, 
measurement of the amount of wear remaining on the brake wear pin 
indicator, and removal of brake assemblies on which misidentified 
torque plates were installed and replacement with serviceable brakes. 
That action was prompted by a report indicating that certain torque 
plates were misidentified and installed on certain brake assemblies. 
The proposed actions were intended to prevent decreased brake 
performance during a rejected takeoff or landing when these brakes are 
at or near their indicated wear limit.
    Since the issuance of that NPRM, Boeing and BFGoodrich have 
initiated an aggressive inspection program to ensure that the 
misidentified torque plates are removed from airplanes and spare part 
inventories. These manufacturers have provided substantiating data to 
the FAA to account for all misidentified torque plates. (Boeing 
submitted a letter dated May 3, 1995, and BFGoodrich transmitted a fax 
memorandum dated May 17, 1995, which account for each misidentified 
torque plate.)
    Based upon the FAA's review of the data submitted by these 
manufacturers, the FAA has determined that the previously identified 
unsafe condition no longer exists. Accordingly, the proposed rule is 
hereby withdrawn.
    Withdrawal of this notice of proposed rulemaking constitutes only 
such action, and does not preclude the agency from issuing another 
notice in the future, nor does it commit the agency to any course of 
action in the future.
    Since this action only withdraws a notice of proposed rulemaking, 
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, the notice of proposed rulemaking, Docket 95-NM-40-AD, 
published in the Federal Register on April 17, 1995 (60 FR 19181), is 
withdrawn.

    Issued in Renton, Washington, on September 6, 1995.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 95-22592 Filed 9-11-95; 8:45 am]
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