Is AD 2021-08-17 a recurring Airworthiness Directive?

No — AD 2021-08-17 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2021-08-17 apply to?

AD 2021-08-17 applies to Airbus Helicopters — models AS332L2, AS332. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2021-08-17

one-time

Official AD 2021-08-17 · FR doc 2021-08568 · 2021-04-27 · airframe

Airworthiness Directives; Airbus Helicopters

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Model AS332L2 helicopters. This AD was prompted by the discovery of a main gearbox (MGB) with worn ramps and broken roller cages. This AD requires installing a placard on the pilot instrument panel and replacing certain MGBs. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-08-17 applies to

MakesAirbus Helicopters

ModelsAS332L2, AS332

Part-conditional — 332A323001.XX, 332A323011.XX, 332A322191.20.

Applies to helicopters with main gearbox (MGB) part number 332A323001.XX with a main reduction gear module part number 332A323011.XX that has free wheel shaft part number 332A322191.20 installed, where "XX" stands for any two digit dash number (also referred to as modification 07-53016).

Whether AD 2021-08-17 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 2021-08-17 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.