Airworthiness Directives; Boeing Model 767-200 and -300 Series Airplanes

[Federal Register Volume 60, Number 234 (Wednesday, December 6, 1995)]
[Rules and Regulations]
[Page 62321]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-29646]



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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 95-NM-190-AD; Amendment 39-9398; AD 95-20-51]


Airworthiness Directives; Boeing Model 767-200 and -300 Series 
Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule; extension of comment period.

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SUMMARY: This document announces an extension of the comment period for 
Airworthiness Directive (AD) 95-20-51, applicable to all Model 767-200 
and -300 series airplanes. That AD invites comments concerning the 
requirement to inspect the lower half of the aft trunnion of the main 
landing gear (MLG) to detect damage, cracking, missing pieces, or 
corrosion; and correction of discrepancies. This extension of the 
comment period is necessary to afford all interested persons an 
opportunity to present their views on the requirements of that AD.

DATES: Effective October 17, 1995, to all persons except those persons 
to whom it was made immediately effective by telegraphic AD T95-20-51, 
issued September 25, 1995.
    Comments for inclusion in the Rules Docket must be received on or 
before February 12, 1996.

ADDRESSES: Submit comments in triplicate to the Federal Aviation 
Administration (FAA), Transport Airplane Directorate, ANM-103, 
Attention: Rules Docket No. 95-NM-190-AD, 1601 Lind Avenue SW., Renton, 
Washington 98055-4056.
    Information concerning this AD may be examined at the FAA, 
Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, 
Washington; or at the Office of the Federal Register, 800 North Capitol 
Street NW., suite 700, Washington, DC.

FOR FURTHER INFORMATION CONTACT: James G. Rehrl, Aerospace Engineer, 
Airframe Branch, ANM-120S, FAA, Transport Airplane Directorate, Seattle 
Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, 
Washington 98055-4056; telephone (206) 227-2783; fax (206) 227-1181.

SUPPLEMENTARY INFORMATION: On October 4, 1995, the FAA issued AD 95-20-
51, amendment 39-9398 (60 FR 53109, October 12, 1995), applicable to 
all Boeing Model 767-200 and -300 series airplanes, which requires that 
operators perform an external general visual inspection of the lower 
half of the aft trunnion of the main landing gear (MLG) to detect 
damage, cracking, missing pieces, or corrosion emanating from the aft 
trunnion bushing fillet seal or from the aft trunnion crossbolt hole. 
That AD invites comments on regulatory, economic, environmental, and 
energy aspects of the rule. -
    That action was prompted by reports of fractures of the outer 
cylinder aft trunnion due to stress corrosion cracking. This condition, 
if not corrected, could result in collapse of the MLG due to the 
problems associated with stress corrosion cracking in the aft trunnion 
assembly; collapse of the MLG could lead to loss of control of the 
airplane during landing, taxiing, and takeoff. -
    Since the issuance of that AD, a commenter to the rule requested an 
extension of the comment period. The commenter states that the 
additional time would provide the public with time to study the 
requirements of the AD and prepare comments for the Rules Docket. -
    The FAA has considered this request and finds it appropriate to 
extend the comment period to give all interested persons additional 
time to examine the requirements of the AD and submit comments. 
Accordingly, the comment period for AD 95-20-51 is extended to February 
12, 1996. It should be noted that the effective date of AD 95-20-51 was 
October 17, 1995; this action does not change that date. Since no other 
portion of that AD or regulatory information has been changed, the 
entire rule is not being republished.

    Issued in Renton, Washington, on November 28, 1995.
Darrell M. Pederson,
Transport Airplane Directorate, Aircraft Certification Service.
[FR Doc. 95-29646 Filed 12-5-95; 8:45 am]
BILLING CODE 4910-13-U

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