83-08-06 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-4636. Applies to Lockheed Model L-1011-385-3 series airplanes, certificated in all categories. Compliance is required as indicated, unless previously accomplished.
To minimize the potential for a total loss of the Active Control System (ACS) inflight, accomplish the following by June 30, 1983:
A. Modify the aircraft wiring in accordance with Part 2, Accomplishment Instructions, in Lockheed-California Company L-1011 Service Bulletin 093-22-147 dated August 17, 1982, or later revisions approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region.
B. Alternative means of compliance providing an equivalent level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region.
C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.
All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Lockheed-California Company, P.O. Box 551, Burbank, California 91520, Attention: Commercial Support Contracts, Dept. 63-11, U-33, B-1. These documents also may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California.
This amendment becomes effective June 2, 1983.