AD 2006-21-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Raytheon | Various | Airworthiness Directives; Raytheon (Beech) Model 400, 400A, and 400T Series Airplanes; and Raytheon (Mitsubishi) Model MU-300 Airplanes |
| aircraft | Mitsubishi | Various | Airworthiness Directives; Raytheon (Beech) Model 400, 400A, and 400T Series Airplanes; and Raytheon (Mitsubishi) Model MU-300 Airplanes |
Unsafe Condition
The buildup of ice on certain internal areas of the engine, such as the leading edges of the front inner compressor stator, could result in a dual-engine flameout.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revise the airplane flight manual (AFM) to modify the Operating Limitations, Abnormal Procedures, and Normal Procedures, as applicable, for flight in icing conditions. Follow the revised procedures to avoid ice accretion and dual-engine flameouts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
Raytheon (Beech) Model 400, 400A, and 400T Series Airplanes; and Raytheon (Mitsubishi) Model MU-300 Airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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