Is AD 2018-20107 a recurring Airworthiness Directive?

No — AD 2018-20107 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2018-20107 apply to?

AD 2018-20107 applies to Leonardo S.P.A. — models AW189. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2018-20107

one-time

AD 2018-20107 · 2018-09-21 · airframe

Airworthiness Directives; Leonardo S.p.A. (Type Certificate Previously Held by Finmeccanica S.p.A., AgustaWestland S.p.A) Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Leonardo S.p.A. (Leonardo) Model AW189 helicopters. This AD requires inspecting the tail gearbox (TGB) fitting for a crack. This AD was prompted by a report of a crack on a TGB fitting that was found during a scheduled inspection. The actions of this AD are intended to prevent an unsafe condition on these products.

Which aircraft AD 2018-20107 applies to

MakesLeonardo S.P.A.

ModelsAW189

Part-conditional — 8G5350A00131.

Applies only to helicopters with tail assembly P/N 8G5350A00131 installed.

Whether AD 2018-20107 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 2018-20107 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.