AD Amdt-39-10339
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper | Aircraft Corporation Models PA-23 | Airworthiness Directives; The New Piper Aircraft Corporation Models PA-23, PA-23-160, PA-23-235, PA-23-250, PA-E23-250, PA-30, PA- 39, PA-40, PA-31, PA-31-300, PA-31-325, PA-31-350, PA-34-200, PA-34- 200T, PA-34-220T, PA-42, PA-42-720, PA-42-1000 Airplanes |
Unsafe Condition
Operating in severe icing conditions may result in reduced aircraft performance, control authority, or structural damage due to ice accumulation exceeding design limits.
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Required Actions
Revise the FAA-approved airplane flight manual (AFM) to specify procedures prohibiting flight in severe icing conditions based on visual cues, limit or prohibit use of flight control devices in such conditions, and provide recognition cues and exit procedures for severe icing conditions.
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Compliance Time
Before further flight
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Affected Aircraft
The New Piper Aircraft Corporation Models PA-23, PA-23-160, PA-23-235, PA-23-250, PA-E23-250, PA-30, PA-39, PA-40, PA-31, PA-31-300, PA-31-325, PA-31-350, PA-34-200, PA-34-200T, PA-34-220T, PA-42, PA-42-720, PA-42-1000 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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