- Effective
- November 20, 1976
- 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
- 39-2745
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 | 21 KB | 60bf8fa8…d68cd44 | FAA DRS (API key needed) |
On this page
The airworthiness directive
76-21-01 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-2745. Applies to Lockheed Model L-1011-385 series airplanes certificated in all categories having C-1A cargo door installed.
Compliance required within the next 300 hours' time in service after the effective date of this AD, unless already accomplished.
To prevent the latch pins on the latch fittings of the C-1A cargo door surround structure from being incorrectly installed during maintenance replacement, which could result in a possible in-flight loss of the C-1A cargo door, accomplish the following:
a. Install latch pin guard assemblies and related components, reidentify the latch fitting assemblies and check proximity sensors adjustment as necessary, on the C-1A cargo door surround structure, in accordance with Lockheed-California Company Service Bulletin 093-52-083 dated May 25, 1976, or later FAA-approved revision or equivalent modification approved by the Chief, Aircraft Engineering Division, FAA Western Region.b. Airplanes may be flown in accordance with FAR 21.197 to a base where the modification can be performed.
This amendment becomes effective November 20, 1976.
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.