Is AD 2020-18-19 a recurring Airworthiness Directive?

No — AD 2020-18-19 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2020-18-19 apply to?

AD 2020-18-19 applies to Leonardo S.P.A. — models AB412, AB412EP. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2020-18-19

one-time

Official AD 2020-18-19 · FR doc 2020-19533 · 2020-09-04 · airframe

Airworthiness Directives; Leonardo S.p.a. Helicopters

What this AD requires

The FAA is superseding Airworthiness Directive (AD) 2014-12-07 for Agusta S.p.A (Agusta) Model AB412 and AB412EP helicopters. AD 2014- 12-07 requires inspecting the rotor brake pinion (pinion) for a crack and replacing it if there is a crack. This AD retains the requirements of AD 2014-12-07 and also requires removing certain serial-numbered pinions from service. This AD was prompted by a report of an additional cracked pinion. The actions of this AD are intended to address an unsafe condition on these products.

Which aircraft AD 2020-18-19 applies to

MakesLeonardo S.P.A.

ModelsAB412, AB412EP

Part-conditional — 412-040-301-101.

Applies only to helicopters with a rotor brake pinion P/N 412-040-301-101 installed. This AD supersedes AD 2014-12-07.

Whether AD 2020-18-19 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 2020-18-19 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.