- 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 | f16b069e…272cbd3 | FAA DRS (API key needed) |
On this page
The airworthiness directive
47-10-09 LOCKHEED: (Was Mandatory Note 8 of AD-763-3.) Applies to All Model 49 Serials Up to and Including 2088.
Compliance required after each engine change.
When found necessary as a result of engine replacement in a quick-change powerplant unit, add seal plates to the engine oil lines where they pass through the engine fire seals, and add cover plates to the alternate oil line cutouts in the fire seals.
(LAC Service Instruction 49/51-39 and LAC Service Bulletin 49/SB-63 cover this same subject for Models 49-51 and 49-46, respectively.)
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.