Is AD 2021-26108 a recurring Airworthiness Directive?

No — AD 2021-26108 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2021-26108 apply to?

AD 2021-26108 applies to Saab — models 340B, 340. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2021-26108

one-time

AD 2021-26108 · 2021-12-01 · airframe

Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Saab AB, Support and Services Model SAAB 340B airplanes. This AD was prompted by a report that the circuit breaker for the emergency cabin lighting tripped without fault in the system. This AD requires replacing a certain circuit breaker with a part having a higher rating, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-26108 applies to

MakesSaab

Models340B, 340

As identified in European Union Aviation Safety Agency (EASA) AD 2021-0058, dated March 1, 2021 (EASA AD 2021-0058).

Whether AD 2021-26108 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 2021-26108 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.