- Model
- C18S
- Data sheet
- TCDSA-757
- Registered aircraft
- 13 matched by model
- Product
- Aircraft · Small 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 January 21, 2026.
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 | 71e5272f…7486be6 | FAA DRS (API key needed) |
On this page
The airworthiness directive
47-33-04 BEECH: (Was Service Note 2 of AD-757-2.) Applies to C18S Aircraft.
Compliance required prior to October 15, 1947, and each 100 hours of operation thereafter.
Inspect gaskets between fuel tank liquidometer units and tanks for fuel leakage. If leakage is evident, replace gasket with Armstrong No. 710 gasket, Beech P/N 189631, without use of sealing compound. (Installation of 189631 gasket eliminates necessity for continued inspections.)
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 13
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1942 | 1 |
|---|---|
| 1943 | 2 |
| 1944 | 5 |
| 1945 | 1 |
4 with no year recorded