AD 81-26-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | L-1011-385-1 | LOCKHEED-CALIFORNIA COMPANY Model L-1011 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-14 | LOCKHEED-CALIFORNIA COMPANY Model L-1011 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-15 | LOCKHEED-CALIFORNIA COMPANY Model L-1011 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-3 | LOCKHEED-CALIFORNIA COMPANY Model L-1011 Series Airplanes |
Unsafe Condition
False Airborne Vibration Monitor System indications may cause an unnecessary shutdown of the number 2 engine.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Incorporate electrical system modifications per Lockheed-California Company L-1011 Service Bulletin 093-23-083 dated October 13, 1981. Alternative means of compliance may be used if approved by the FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 30 days after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lockheed-California Company Model L-1011 series airplanes with serial numbers: 1083-1090, 1092-1097, 1099-1103, 1105-1106, 1112-1113, 1117-1119, 1121-1123, 1126-1129, 1132, 1134-1136, 1139, 1141, 1145-1147
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.