- Models
- DC3-G102, DC3-G102A, DC3-G103A, DC3-G202A, DC3A-S1C3G, DC3A-S1CG and 8 more
- Registered aircraft
- 61 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 | 19 KB | b287778c…9269c0c | FAA DRS (API key needed) |
On this page
The airworthiness directive
48-05-01 DOUGLAS: Applies to All DC3 Aircraft Equipped With Pacific Aviation Oil Shutoff Valves.
Compliance required at first engine change after March 1, 1948, but not later than May 1, 1948.
Replace the present "O" rings in the oil shutoff valves with rings of H222-90 high temperature material or AMS-3228B material. There has been reported leakage attributed to the fact that the material in the "O" rings is not capable of withstanding the operating temperature of the oil.
(Douglas Service Bulletin DC3 No. 256 covers this same subject.)
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 61
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1936 | 2 |
|---|---|
| 1937 | 1 |
| 1939 | 1 |
| 1940 | 4 |
| 1941 | 2 |
| 1942 | 8 |
| 1943 | 9 |
| 1944 | 16 |
| 1945 | 3 |
| 1949 | 1 |
| 1987 | 1 |
13 with no year recorded