AD Amdt-39-10601
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Mitsubishi | Heavy Industries Ltd | Airworthiness Directives; Mitsubishi Heavy Industries Ltd. Model YS-11 and YS-11A Series Airplanes |
Unsafe Condition
Improper use of propeller beta during flight leading to power levers positioned below the flight idle stop, which can cause loss of airplane controllability or engine overspeed with consequent loss of engine power.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revise the Airplane Flight Manual (AFM) to prohibit positioning the power levers below the flight idle stop.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Mitsubishi Heavy Industries Ltd. Model YS-11 and YS-11A series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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