- Model
- 47D1
- Data sheet
- TCDSH-1
- Registered aircraft
- 49 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.
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| FAA DRS HTML | 19 KB | 8cfd9d1e…54fedfa | FAA DRS (API key needed) |
On this page
The airworthiness directive
50-06-01 BELL: Applies to All Model 47D1 Helicopters.
Compliance required not later than March 31, 1950.
Ventral fin installation, Bell P/N 47-267-058 should be replaced by the revised ventral fin and fixed tab installation, Bell P/N 47-267-063. The new installation is designed to eliminate the possibility of those fatigue failures which have been experienced in the old design.
Upon completion of the above modifications, the inspections required by AD 49-34-02 may be discontinued.
(Bell Service Bulletin No. 71 covers the same subject.)
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 49
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1947 | 6 |
|---|---|
| 1948 | 3 |
| 1949 | 3 |
| 1950 | 2 |
| 1951 | 6 |
| 1952 | 3 |
| 1953 | 2 |
| 1954 | 1 |
| 1959 | 3 |
| 1960 | 1 |
| 1963 | 2 |
| 1964 | 1 |
| 1965 | 1 |
| 1966 | 1 |
| 1967 | 1 |
13 with no year recorded