Is AD 2021-04-04 a recurring Airworthiness Directive?

Yes — AD 2021-04-04 requires a repetitive inspection every 15 hours. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2021-04-04 apply to?

AD 2021-04-04 applies to Airbus Helicopters — models SA330J, SA330. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2021-04-04

recurring

Official AD 2021-04-04 · FR doc 2021-03056 · 2021-02-12 · airframe

Airworthiness Directives; Airbus Helicopters

What this AD requires

The FAA is superseding Airworthiness Directive (AD) 2020-19- 02, which applied to certain Airbus Helicopters (previously Eurocopter France) Model SA330J helicopters. AD 2020-19-02 required repetitively inspecting affected tail rotor (T/R) blades and depending on the inspection results, repairing or replacing the T/R blade. AD 2020-19-02 also prohibited installing an affected T/R blade unless it passed the inspections. This AD retains the requirements of AD 2020-19-02 and also clarifies the applicability, clarifies the affected T/R blades in the required actions, reduces a compliance time, and corrects the prohibition requirement. This AD was prompted by the determination that these corrections are necessary. The FAA is issuing this AD to address the unsafe condition on these products.

Repetitive inspection. Re-inspect every 15 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2021-04-04 applies to

MakesAirbus Helicopters

ModelsSA330J, SA330

Part-conditional — 330A12-0005, 330A12-0006.

Applies to helicopters with a tail rotor (T/R) blade part number 330A12-0005-(all dash numbers) (without a de-icing system) or 330A12-0006-(all dash numbers) (with a de-icing system) installed.

Whether AD 2021-04-04 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 2021-04-04 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.