AD 2021-23-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Transport | and Commuter Category | Airworthiness Directives; Transport and Commuter Category Airplanes |
Unsafe Condition
unsafe condition on these products.
Required Actions
Inspect the airplane/aircraft flight manual (AFM) to determine if the limitations section has been revised to incorporate limitations prohibiting certain operations requiring radio altimeter data when in the presence of 5G C-Band interference as identified by Notices to Air Missions (NOTAMs).
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
All transport and commuter category airplanes equipped with a radio (also known as radar) altimeter.
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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