AD 74-17-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Gulfstream Aerospace Corporation | G-1159 | Airworthiness Directives; GRUMMAN AMERICAN AVIATION CORPORATION Model G-1159 Airplanes |
Unsafe Condition
Failure of the ground spoilers to deactivate could result in unintended operation during flight, leading to potential loss of control.
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Required Actions
Deactivate ground spoilers by removing the electrical connector on the solenoid operated control valve, pulling and locking out the circuit breaker, disconnecting actuators using specified methods, checking cylinder lock, installing placards, and complying with Grumman ASC 181 and AFM procedures. Reactivation requires ASC 180 or equivalent approved method.
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Compliance Time
within the next 10 hours' time in service after receipt of telegram dated July 17, 1974, unless already accomplished or noted otherwise
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Affected Aircraft
Grumman American Aviation Corporation Model G-1159 airplanes certificated in all categories.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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