AD 78-20-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | SOCATA - Groupe Aerospatiale | GA-7 | Airworthiness Directives; Gulfstream American Corporation (GAC) (Formerly Grumman American Aviation Corporation (GAAC) Model GA-7 Airplanes |
Unsafe Condition
Excessive force required to move the fuel selector valve from one position to another position creates a hazard to the airplane.
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Required Actions
Remove original fuel selector valves (Gerdes Part Number A980-5) and install improved ones (Gerdes Part Number A980-7) following GA-7 Maintenance Manual procedures. After installation, test each selector in ON, OFF, and CROSSFEED positions to ensure correct operation, no leakage, and positive detent at each position.
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Compliance Time
within the next 25 hours' time in service after the effective date of this AD
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Affected Aircraft
Gulfstream American Corporation (GAC) (Formerly Grumman American Aviation Corporation (GAAC) Model GA-7 serial numbers GA7-001 through GA7-0039
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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