- Effective
- June 10, 1971
- Model
- G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B)
- Data sheet
- TCDSTC 654
- Registered aircraft
- 34 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-1224
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 | 19 KB | ab7ecbf4…9bfdfd8 | FAA DRS (API key needed) |
On this page
The airworthiness directive
71-12-03 GRUMMAN AIRCRAFT: Amdt. 39-1224. Applies to Model G21A aircraft certificated in all categories.
Within the next 25 flight hours after the effective date of this AD, unless already accomplished, visually inspect, replace or repair P/N 7190Y-OA-1408 (flexible drive shaft, elevator tab control) in accordance with the procedure of Grumman Customer Bulletin G21A No. 71-1 dated 3 March 1971 or with equivalent method.
Equivalent methods or parts must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Southern Region.
This amendment is effective June 10, 1971.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 34
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1939 | 2 |
|---|---|
| 1940 | 1 |
| 1942 | 4 |
| 1943 | 4 |
| 1944 | 3 |
| 1945 | 2 |
| 1946 | 5 |
| 1947 | 1 |
| 1951 | 1 |
| 1956 | 1 |
| 1958 | 1 |
| 1959 | 1 |
| 1962 | 1 |
7 with no year recorded