AD 81-24-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Gulfstream Aerospace Corporation | G-1159 | Airworthiness Directives; GULFSTREAM AMERICAN CORPORATION Model G-1159 and G-1159A |
| aircraft | Gulfstream Aerospace Corporation | G-1159A | Airworthiness Directives; GULFSTREAM AMERICAN CORPORATION Model G-1159 and G-1159A |
Unsafe Condition
Loss of fluid flow in the auxiliary hydraulic system following a complete loss of fluid in the combined hydraulic system.
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Required Actions
Install a check valve in the reservoir system in accordance with Gulfstream American Aircraft Service Change No. 295 (for Model G-1159) and ASC No. 21 (for Model G-1159A). An equivalent method of compliance may be approved.
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Compliance Time
within the next 75 hours time in service after the effective date of this AD
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Affected Aircraft
Gulfstream American Corporation Model G-1159 (Serial Numbers 1 through 248, 250, 251, 253 through 258 and 775) and Model G-1159A (Serial Numbers 249, 252, 300 through 338 and 875)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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