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Airworthiness Directive 2021-26-24

recurring
Official AD 2021-26-24 · FR doc 2022-00759 · 2022-01-18 · airframe

Airworthiness Directives; Leonardo S.p.a. (Type Certificate Previously Held by Agusta S.p.A.) Helicopters

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. (type certificate previously held by Agusta S.p.A.) Model A109A and A109A II helicopters. This AD was prompted by a report of internal corrosion on a main rotor (M/R) blade. This AD requires repetitively inspecting affected M/R blades and accomplishing film analysis and repair in accordance with certain approved methods. The FAA is issuing this AD to address the unsafe condition on these products.

Repetitive inspection. Re-inspect every 24 months. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2021-26-24 applies to

MakesLeonardo S.P.A.
ModelsA109A, A109A II, A109
Part-conditional — 109-0103-01-115.

Applies only if a main rotor (M/R) blade, P/N 109-0103-01-115, is installed. Type certificate previously held by Agusta S.p.A.

Whether AD 2021-26-24 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 2021-26-24 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.