Is AD 2021-04940 a recurring Airworthiness Directive?

No — AD 2021-04940 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2021-04940 apply to?

AD 2021-04940 applies to Sikorsky Aircraft Corporation — models S-92A, S-92. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2021-04940

one-time

AD 2021-04940 · 2021-03-10 · airframe

Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters. This AD was prompted by the manufacturer discovering nonconforming threads, resulting in a life limit reduction on multiple landing gear components including threaded hinge pins and main landing gear (MLG) and nose landing gear (NLG) actuator pins. This AD requires a one-time inspection of the landing gear for components with non- conforming threads and removal of any nonconforming threaded hinge pin and MLG and NLG actuator pin. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-04940 applies to

MakesSikorsky Aircraft Corporation

ModelsS-92A, S-92

Serial-conditional — narrows to serials 920006–920334.

Whether AD 2021-04940 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 2021-04940 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.