Is AD 2021-19-09 a recurring Airworthiness Directive?

No — AD 2021-19-09 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2021-19-09

Q: Which aircraft does AD 2021-19-09 apply to?

AD 2021-19-09 applies to Airbus Helicopters — models AS350B, AS350BA, AS350B1, AS350B2, AS350D, AS355E, AS355F, AS355F1. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2021-19-09 · FR doc 2021-21117 · 2021-09-30 · airframe

Airworthiness Directives; Airbus Helicopters

What this AD requires

The FAA is superseding Airworthiness Directive (AD) 2020-24- 03, which applied to certain Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350D, AS355E, AS355F, AS355F1, and AS355F2 helicopters. AD 2020-24-03 required testing the UP/DOWN switches of a certain part-numbered DUNLOP cyclic stick grip, installing a placard, and revising the existing Rotorcraft Flight Manual (RFM) for your helicopter, or removing the DUNLOP cyclic stick grip. This AD retains some requirements of AD 2020-24-03 and also requires incorporating a new modification, and removing the placard and the RFM amendment installed previously as required by AD 2020-24-03. The additional actions are required as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. This AD was prompted by the development of a modification (MOD) procedure by Airbus Helicopters for the electrical wiring of the hoist control of the DUNLOP cyclic stick. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-19-09 applies to

MakesAirbus Helicopters

ModelsAS350B, AS350BA, AS350B1, AS350B2, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS350, AS355

Applicability is as identified in EASA AD 2021-0023, dated January 19, 2021.

Whether AD 2021-19-09 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 2021-19-09 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.