AD 98-04-26
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-46-310P | Airworthiness Directives; The New Piper Aircraft Corporation Models PA-46-310P and PA-46-350P Airplanes |
| aircraft | Piper Aircraft Inc. | PA-46-350P | Airworthiness Directives; The New Piper Aircraft Corporation Models PA-46-310P and PA-46-350P Airplanes |
Unsafe Condition
Flight in severe icing conditions may result in ice build-up on protected surfaces exceeding the capability of the ice protection system, or may result in ice forming aft of the protected surfaces, which may not be shed using the ice protection systems and may seriously degrade the performance and controllability of the airplane.
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Required Actions
Revise the AFM Limitations Section to specify procedures prohibiting flight in severe icing conditions (determined by visual cues like ice aft of protected wing areas or unusual trim conditions), prohibit autopilot use in such conditions, and require wing icing inspection lights to be operative at night. Revise the Normal Procedures Section to provide recognition cues for severe icing conditions and procedures for exiting, including requesting priority handling from Air Traffic Control, avoiding abrupt maneuvers, and flap usage restrictions.
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Compliance Time
Within 30 days after the effective date of this AD (March 13, 1998).
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Affected Aircraft
The New Piper Aircraft Corporation Models PA-46-310P and PA-46-350P airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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