Is AD 2021-21-06 a recurring Airworthiness Directive?

No — AD 2021-21-06 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2021-21-06 apply to?

AD 2021-21-06 applies to Hélicoptères Guimbal — models Cabri G2, Cabri. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2021-21-06

one-time

Official AD 2021-21-06 · FR doc 2021-24541 · 2021-11-12 · airframe

Airworthiness Directives; Hélicoptères Guimbal Helicopters

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for H[eacute]licopt[egrave]res Guimbal (HG) Model Cabri G2 helicopters with certain part-numbered aluminum cooling fans (cooling fan) installed. This AD was prompted by a report of an occurrence of an in-flight shutdown due to a crack and subsequent failure of the cooling fan. This AD requires removing certain part-numbered cooling fans from service, or modifying certain part-numbered cooling fans before exceeding a certain total hours time-in-service (TIS), and installing newly designed cooling fans. This AD also prohibits installing any affected cooling fan on any helicopter. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-21-06 applies to

MakesHélicoptères Guimbal

ModelsCabri G2, Cabri

Part-conditional — G52-00-000, G52-00-001, G52-04-100, G52-10-100, G52-10-101.

Applies only if aluminum cooling fan P/N G52-00-000 is installed, or P/N G52-00-001 or G52-04-100 is installed and is or was previously mounted on a 12-hole engine pulley P/N G52-10-100 or G52-10-101.

Whether AD 2021-21-06 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 2021-21-06 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.