Is AD 2017-25-17 a recurring Airworthiness Directive?

Yes — AD 2017-25-17 requires a repetitive inspection every 25 hours. Next-due depends on the aircraft's time in service.

Airworthiness Directive 2017-25-17

Q: Which aircraft does AD 2017-25-17 apply to?

Applicability depends on the aircraft's type certificate; check it against the specific tail.

recurring

Official AD 2017-25-17 · FR doc 2017-27263 · 2017-12-20 · airframe

Airworthiness Directives; Agusta S.p.A. Helicopters

What this AD requires

We are superseding airworthiness directive (AD) 2011-27-08 for Agusta S.p.A. (Agusta) Model A109S and AW109SP helicopters. AD 2011-27- 08 required repetitively inspecting each elevator assembly for a crack. This new AD retains the initial inspection interval and adds a repetitive borescope inspection. This AD is prompted by the discovery of another crack on an elevator assembly since AD 2011-27-08 was issued. The actions of this AD are intended to prevent an unsafe condition on these helicopters.

Repetitive inspection. Re-inspect every 25 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2017-25-17 applies to

Applicability depends on the aircraft’s type certificate — check it against the specific tail.

Whether AD 2017-25-17 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 2017-25-17 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.