Airworthiness Directive · Amendment 39-8839 · Lockheed Martin Corporation Airplanes
Lockheed Martin Corporation Airplanes
Superseded. A later AD replaced this one: AD 2000-21-01. Comply with the one in force.
This AD applies to Lockheed Martin Corporation L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, L-1011-385-3.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Lockheed Model L-1011 series airplanes, that currently requires certain structural modifications and inspections. This amendment revises certain inspections required by the existing AD, and requires additional inspections and structural modifications. This amendment is prompted by reports of recent incidents involving fatigue cracking and corrosion in transport category airplanes that are approaching or have exceeded their economic design goal. The actions specified by this AD are intended to prevent degradation of the structural capabilities of the affected airplanes. This action also reflects the FAA's determination that long term continued operational safety should be assured by actual modification of the airframe rather than repetitive inspections. The incorporation by reference of Lockheed Service Bulletin 093-51-035, Revision 1, dated December 16, 1991, as revised by L-1011Service Bulletin Change Notification 093-51-035, R1-CN1, dated October 27, 1992, as listed in the regulations, is approved by the Director of the Federal Register as of April 4, 1994. The incorporation by reference of Lockheed Service Bulletin 093-51-035, dated June 28, 1990, as listed in the regulations, was approved previously by the Director of the Federal Register as of March 22, 1991 (56 FR 6556, February 19, 1991).
