- Model
- 49-46
- Data sheet
- TCDSA-763
- Registered aircraft
- 1 matched by model
- Product
- Aircraft · Large airplane
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 | 18 KB | 8d29ba22…1360da8 | FAA DRS (API key needed) |
On this page
The airworthiness directive
47-10-23 LOCKHEED: (Was Mandatory Note 25 of AD-763-3.) Applies to Model 49 Serials 1975, 1976, and 2021 Through 2059.
Compliance required immediately.
Install AC364-524 steel nuts in place of any AC364-B524 brass nuts which may be installed on bolts through bathtub fittings at wing Station 80 (5 nuts per fitting, 170 nuts per airplane should be checked.
(LAC Service Bulletin 49/SB-42 covers this same subject.)
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 1
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.