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Airworthiness Directive 2021-20-18

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Official AD 2021-20-18 · FR doc 2021-22510 · 2021-10-19 · airframe

Airworthiness Directives; Leonardo S.p.a. Helicopters

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain serial-numbered Leonardo S.p.a. Model AW119 MKII helicopters. This AD was prompted by the discovery that the passenger cabin windows (windows) on a batch of helicopters were improperly installed during production. This AD requires removing and reinstalling the windows. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-20-18 applies to

MakesLeonardo S.P.A.
ModelsAW119 MKII, AW119
Serial-conditional — narrows to serials 14831–14831, 14834–14834, 14838–14838, 14840–14840, 14841–14841, 14842–14842, 14843–14843, 14844–14844, 14901–14901, 14904–14904, 14905–14905, 14906–14906, 14918–14918.

Whether AD 2021-20-18 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 2021-20-18 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.