Is AD 2018-05-10 a recurring Airworthiness Directive?

No — AD 2018-05-10 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2018-05-10 apply to?

AD 2018-05-10 applies to Agusta S.P.A. — models AB412 EP, AB412. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2018-05-10

one-time

Official AD 2018-05-10 · FR doc 2018-04872 · 2018-03-12 · airframe

Airworthiness Directives; Agusta S.p.A. Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model AB412 and AB412 EP helicopters. This AD requires removing each shoulder harness seat belt comfort clip (comfort clip) and inspecting the seat belt shoulder harness. This AD is prompted by a report of a comfort clip interfering with the seat belt inertia reel. The actions of this AD are intended to prevent an unsafe condition on these helicopters.

Which aircraft AD 2018-05-10 applies to

MakesAgusta S.P.A.

ModelsAB412 EP, AB412

Applies only to helicopters with a seat belt comfort clip installed (no part number given).

Whether AD 2018-05-10 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 2018-05-10 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.