| AD Number | 81-26-06 | Status | Active |
| Effective Date | December 31, 1981 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-4283 |
| Product Type | ["Aircraft"] | Product Subtype | ["Large Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Lockheed Martin Corporation |
| Model(s) | L-1011-385-1 L-1011-385-1-14 L-1011-385-1-15 L-1011-385-3 |
81-26-06 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-4283. Applies to Lockheed Model L-1011 series airplanes, Serial Numbers as listed below, certificated in all categories. Compliance required within 30 days after the effective date of this AD, unless previously accomplished:
A. To prevent an unnecessary shutdown of the number 2 engine due to false Airborne Vibration Monitor System indications, incorporate electrical system modifications in accordance with Part 2, Accomplishment Instructions, of Lockheed-California Company L-1011 Service Bulletin 093-23-083 dated October 13, 1981, for the following 42 aircraft:
S/N 1083-1090
S/N 1117-1119
S/N 1134-1136
S/N 1092-1097
S/N 1121-1123
S/N 1139
S/N 1099-1103
S/N 1126-1129
S/N 1141
S/N 1105-1106
S/N 1132
S/N 1145-1147
S/N 1112-1113
B. Alternative means of compliance providing an equivalent level of safety may be used when approved by the Chief, Los Angeles Area 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.
The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1).
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 FAA Northwest Mountain Region, 9010 East Marginal Way South, Seattle, Washington 98108; or the Los Angeles Area Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California 90808.
This Amendment becomes effective December 31, 1981.