AD 98-04-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Nomad TC Pty Ltd | N22B | Airworthiness Directives; AeroSpace Technologies of Australia Pty Ltd. Models N22B and N24A Airplanes. |
| aircraft | Nomad TC Pty Ltd | N24A | Airworthiness Directives; AeroSpace Technologies of Australia Pty Ltd. Models N22B and N24A Airplanes. |
Unsafe Condition
Flight in freezing rain, freezing drizzle, or mixed 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. This ice 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, prohibiting autopilot use when ice forms aft of protected wing surfaces or with unusual trim conditions, and requiring icing wing inspection lights to be operative at night. Revise the AFM 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
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Affected Aircraft
AeroSpace Technologies of Australia Pty Ltd. Models N22B and N24A 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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