- Effective
- November 23, 1981
- Models
- G-1159, G-1159A
- Data sheet
- TCDSA12EA
- Registered aircraft
- 73 matched by model
- Product
- Aircraft · Large airplane
- Amendment
- 39-4259
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 | 1ff923cd…e44336e | FAA DRS (API key needed) |
On this page
The airworthiness directive
81-24-02 GULFSTREAM AMERICAN CORPORATION (GRUMMAN AMERICAN AVIATION CORPORATION): Amendment 39-4259. Applies to Model G-1159 Serial Numbers 1 through 248, 250, 251, 253 through 258 and 775; Model G-1159A Serial Numbers 249, 252, 300 through 338 and 875.
Compliance required within the next 75 hours time in service after the effective date of this AD, unless already accomplished. To prevent the loss of fluid flow in the auxiliary hydraulic system following a complete loss of fluid in the combined hydraulic system, install a check valve in the reservoir system in accordance with Gulfstream American Aircraft Service Change (ASC) No. 295 (for the Model G-1159) and ASC No. 21 (for the Model G-1159A), both dated September 1, 1981. An equivalent method of compliance may be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region.
This amendment becomes effective November 23, 1981.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 73
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1967 | 1 |
|---|---|
| 1968 | 2 |
| 1971 | 1 |
| 1974 | 1 |
| 1976 | 1 |
| 1977 | 1 |
| 1980 | 4 |
| 1981 | 6 |
| 1982 | 9 |
| 1983 | 3 |
| 1984 | 14 |
| 1985 | 2 |
| 1986 | 3 |
25 with no year recorded