- Models
- D18C, D18C-T, D18S
- Data sheets
- TCDSA-765TCDSTC 770
- Registered aircraft
- 55 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 | 19 KB | bbff71d0…c8ef1a9 | FAA DRS (API key needed) |
On this page
The airworthiness directive
47-34-02 BEECH: (Was Mandatory Note 3 of AD-770-1 and Mandatory Note 4 of AD- 765-1.) Applies to D18S, D18C and D18C-T Airplanes Which Do Not Have Drain Provisions at Bulkhead No. 15.
Compliance required prior to December 1, 1947.
To provide additional drainage, to prevent freezing of trapped moisture in the tail cone which could jam the elevator control system, a 3/4-inch diameter hole should be drilled near the front of the tail cone outer section on the centerline of the lower surface. A suitable marine grommet should be installed to provide for negative pressures. Also a 1/2-inch diameter hole should be drilled on each side of the jack pad through the lower part of bulkhead No. 15.
(Beech Service Bulletin D18-46 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 · 55
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1943 | 1 |
|---|---|
| 1945 | 3 |
| 1946 | 15 |
| 1947 | 2 |
| 1948 | 2 |
| 1949 | 1 |
| 1950 | 1 |
| 1951 | 2 |
| 1952 | 6 |
| 1953 | 4 |
| 1954 | 2 |
| 1958 | 1 |
| 1966 | 1 |
14 with no year recorded