AD 64-12-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | D & R Nevada LLC | 22 | Airworthiness Directives; GENERAL DYNAMICS Models 22, 22M, 30 and 30A Aircraft |
| aircraft | D & R Nevada LLC | 22M | Airworthiness Directives; GENERAL DYNAMICS Models 22, 22M, 30 and 30A Aircraft |
| aircraft | D & R Nevada LLC | 30 | Airworthiness Directives; GENERAL DYNAMICS Models 22, 22M, 30 and 30A Aircraft |
| aircraft | D & R Nevada LLC | 30A | Airworthiness Directives; GENERAL DYNAMICS Models 22, 22M, 30 and 30A Aircraft |
Unsafe Condition
Inadvertent operation of the engine air turbine starter at continuous overspeeds caused starter failure with resultant damage to surrounding nacelle structure and propulsion systems.
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Required Actions
Modify the starter operation warning systems to include a master warning light indication when the starter valve is open per specified service bulletins. Relocate warning lights for Models 30 and 30A as an alternative. Revise the Airplane Flight Manual's emergency procedures to include isolating a malfunctioning starter valve.
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Compliance Time
within 1,500 hours' time in service after the effective date of this AD
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Affected Aircraft
GENERAL DYNAMICS Models 22, 22M, 30 and 30A Aircraft
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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