AD 2001-24-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Raytheon | Beech 400 | Airworthiness Directives; Raytheon Model Beech 400, 400A, and 400T Series Airplanes, Model Mitsubishi MU-300 Airplanes, and Model Beech MU-300-10 Airplanes |
| aircraft | Mitsubishi | MU-300 | Airworthiness Directives; Raytheon Model Beech 400, 400A, and 400T Series Airplanes, Model Mitsubishi MU-300 Airplanes, and Model Beech MU-300-10 Airplanes |
Unsafe Condition
Loss of Indicated Airspeed (IAS) display due to water freezing in the pitot systems, leading to loss of altitude displays, pitch error, and adverse effects on connecting systems, which could result in reduced controllability of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revise the Emergency Procedures Section of the Airplane Flight Manual (AFM) to include in-flight procedures for loss of airspeed indication. This can be accomplished by either inserting the specified Temporary AFM changes or directly incorporating the AD into the AFM.
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
Raytheon Model Beech 400, 400A, and 400T Series Airplanes, Model Mitsubishi MU-300 Airplanes, and Model Beech MU-300-10 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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