- Effective
- April 29, 1985
- Models
- 47, 47B, 47B3, 47D, 47D1, 47E and 18 more
- Registered aircraft
- 490 matched by model
- Product
- Aircraft · Rotorcraft
- Amendment
- 39-5041
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 | 20 KB | cef6d07f…7a5227c | FAA DRS (API key needed) |
On this page
The airworthiness directive
85-08-03 BELL HELICOPTER TEXTRON, INC. (BHTI): Amendment 39-5041. Applies to BHTI Model 47 Series helicopters and all other helicopters, certified in all categories, equipped with tail rotor blade assembly, P/N 47-642-117-1, S/N's A-8 through A-72.
Compliance is required as indicated unless already accomplished.
To prevent possible failure of the tail rotor blade accomplish the following:
(a) Within the next 100 hours time in service after the effective date of this AD, remove from service tail rotor blade assemblies Part Number 47-642-117-1, Serial Numbers A-8 through A-72.
(b) Any equivalent method of compliance with this AD must be approved by the Manager, Helicopter Certification Branch, Federal Aviation Administration, 4400 Blue Mound Road, Fort Worth, Texas 76106.
(c) In accordance with FAR Sections 21.197 and 21.199, flight is permitted to a base where the replacement required by this AD may be accomplished.
NOTE: Alert Service Bulletin, No. 47-84-11, dated 10-16-84, pertains to this AD.
This amendment becomes effective on April 29, 1985.
Affected TCDS · 3
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 490
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 | 10 |
| 1948 | 5 |
| 1949 | 3 |
| 1950 | 2 |
| 1951 | 7 |
| 1952 | 8 |
| 1953 | 8 |
| 1954 | 9 |
| 1955 | 7 |
| 1956 | 19 |
| 1957 | 18 |
| 1958 | 18 |
| 1959 | 10 |
| 1960 | 10 |
| 1961 | 9 |
| 1962 | 12 |
| 1963 | 20 |
| 1964 | 18 |
| 1965 | 20 |
| 1966 | 33 |
| 1967 | 28 |
| 1968 | 20 |
| 1969 | 12 |
| 1970 | 8 |
| 1971 | 12 |
| 1972 | 14 |
| 1973 | 10 |
| 1974 | 4 |
| 1975 | 2 |
| 1976 | 1 |
| 1979 | 1 |
| 1980 | 1 |
| 1981 | 1 |
| 2010 | 1 |
128 with no year recorded