- 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 | e94bc524…98ab0e8 | FAA DRS (API key needed) |
On this page
The airworthiness directive
47-10-07 LOCKHEED: (Was Mandatory Note 8 of AD-763-3.) Applies Only to Model 49 Serial Numbers 2021 to 2088, Inclusive.
Compliance required prior to April 1, 1947.
Replace the existing restrictor valve (P/N 66404) in each main landing gear down line with a winterized type restrictor valve (LAC P/N 667489.)
(LAC Service Instruction 049/SI-75, 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.