- Models
- 47B, 47B3, 47D
- Data sheet
- TCDSH-1
- Registered aircraft
- 5 matched by model
- Product
- Aircraft · Rotorcraft
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 | f9c1df36…77b7a24 | FAA DRS (API key needed) |
On this page
The airworthiness directive
48-12-05 BELL: Applies to Models 47B Series and 47D.
Compliance required at next 100-hour teardown inspection if less than 600 hours have been accumulated. (If over 600 hours have been accumulated, this change must be accomplished immediately.)
Replace the dural shear screws in the transmission spider assembly with steel shear screws (P/N 47-620-485-1).
(Bell Service Bulletin No. 47C66, revised February 10, 1948, also covers this same subject.)
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 5
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1946 | 1 |
|---|---|
| 1947 | 1 |
| 1954 | 1 |
| 1955 | 1 |
1 with no year recorded