- Effective
- September 29, 1980
- Models
- L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, L-1011-385-3
- Data sheet
- TCDSA23WE
- Registered aircraft
- 4 matched by model
- Product
- Aircraft · Large airplane
- Amendment
- 39-3920
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
| File | Size | SHA-256 | Original |
|---|---|---|---|
| FAA DRS HTML | 20 KB | f73db183…24bb0bc | FAA DRS (API key needed) |
On this page
The airworthiness directive
80-19-18 LOCKHEED - CALIFORNIA: Amendment 39-3920. Applies to Lockheed Model L-1011-385 series airplanes certificated in all categories.
Compliance required within 25 hours' time in service from the effective date of this AD, unless already accomplished.
To prevent possible fire damage to the forward electronic service center accomplish the following:
a) Open the circuit breaker labeled "HEATERS JET PUMP LAV" (L-1011-385-1), "HEATERS LAV JET PUMP" (L-1011-385-3); collar the circuit breaker and install a tag labeled "Do Not RE-SET".
NOTE: Lockheed Alert Service Bulletin 093-21-A180 dated March 12, 1980 refers to this subject.
b) Alternative inspections, modifications or other actions which provide an equivalent level of safety may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region.
This amendment becomes effective September 29, 1980.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 4
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.