- Models
- C-46A, C-46D, C-46F, C-46R, C-46E, C-46A and 9 more
- Registered aircraft
- 7 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 | 20 KB | c56dc34d…a15a0b7 | FAA DRS (API key needed) |
On this page
The airworthiness directive
52-18-01 CURTISS-WRIGHT: Applies to all Model C-46 aircraft equipped with Curtiss Drawing P/N S20-480-1101-2 Carburetor Adapter Gasket.
Compliance required not later than December 1, 1952.
Several instances of splitting and tearing of the neoprene carburetor adapter gasket, P/N S20-480-1101-2, permitting portions of gasket material to block the carburetor air passage has resulted in abrupt engine cutout. To eliminate the occurrence of this hazardous condition, either of the following changes or an approved equivalent shall be accomplished:
(a) Install new gasket and clamping assembly per USAF T.O. 01-25LA-79.
(b) Install carburetor adapter flange, Slick Airways P/N 00391-2.
As a precautionary measure, the subject gaskets shall be inspected for signs of looseness and splitting during each periodic inspection until accomplishment of the above.
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 7
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1942 | 1 |
|---|---|
| 1944 | 4 |
| 1945 | 1 |
| 1959 | 1 |