Is AD 2023-11371 a recurring Airworthiness Directive?

No — AD 2023-11371 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2023-11371

Q: Which aircraft does AD 2023-11371 apply to?

AD 2023-11371 applies to Boeing, Airbus, Bombardier, Embraer, Gulfstream Aerospace Corporation, Gulfstream Aerospace Lp, Textron Aviation, Pilatus, Fokker Services, Saab, De Havilland Canada, Airbus Canada, Atr, Mhi Rj Aviation, Bae Systems, Lockheed Martin, Viking Air, Dassault Aviation. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 2023-11371 · 2023-05-26 · airframe

Airworthiness Directives; Transport and Commuter Category Airplanes

What this AD requires

The FAA is superseding Airworthiness Directive (AD) 2021-23- 12, which applied to all transport and commuter category airplanes equipped with a radio (also known as radar) altimeter. AD 2021-23-12 required revising the limitations section of the existing airplane/ aircraft flight manual (AFM) 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). Since the FAA issued AD 2021-23-12, the FAA determined that additional limitations are needed due to the continued deployment of new 5G C-Band stations whose signals are expected to cover most of the contiguous United States at transmission frequencies between 3.7-3.98 GHz. For certain airplanes, this AD requires revising the limitations section of the existing AFM to incorporate limitations prohibiting certain operations requiring radio altimeter data, due to the presence of 5G C-Band interference. This AD also requires modifying certain airplanes to allow safe operations in the U.S. 5G C-Band radio frequency environment. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2023-11371 applies to

MakesBoeing Airbus Bombardier EmbraerGulfstream Aerospace CorporationGulfstream Aerospace LpTextron AviationPilatusFokker ServicesSaabDe Havilland CanadaAirbus CanadaAtrMhi Rj AviationBae SystemsLockheed MartinViking AirDassault Aviation

Applies to all transport and commuter category airplanes equipped with a radio (also known as radar) altimeter. The 18 design approval holders listed are given as non-exhaustive examples ('including, but not limited to') of applicable airplanes, not a complete list of makes/models.

Whether AD 2023-11371 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 2023-11371 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.