AD Amdt-39-10647
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McDonnell Douglas | DC-3 and DC-3C | Airworthiness Directives; Turbopropeller-Powered McDonnell Douglas Model DC-3 and DC-3C Series Airplanes |
Unsafe Condition
Improper use of the ground propeller beta range during flight can cause loss of airplane controllability, engine overspeed, and consequent loss of engine power due to power levers positioned below the flight idle stop.
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Required Actions
Revise the Airplane Flight Manual (AFM) to modify the flight idle stop positioning limitation and include consequences of improper power lever positioning below the flight idle stop during flight.
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Compliance Time
Before further flight
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Affected Aircraft
McDonnell Douglas Model DC-3 and DC-3C series airplanes equipped with turboprop engines.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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