Is AD 00-25151 a recurring Airworthiness Directive?

No — AD 00-25151 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 00-25151 apply to?

AD 00-25151 applies to Agusta — models A109. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 00-25151

one-time

AD 00-25151 · 2000-10-02 · airframe

Airworthiness Directives; Agusta S.p.A. Model A109K2 and A109E Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model A109K2 and A109E helicopters. This AD requires replacing a certain main transmission aft support fitting (aft support fitting) with an airworthy aft support fitting within specified time intervals and establishes a retirement life for certain aft support fittings. This AD is prompted by three failures of the engine to main gearbox drive shaft due to fatigue cracks on the aft support fittings. This condition, if not corrected, could result in excessive displacement of the main gearbox, failure of an engine to main gearbox drive shaft, loss of power to the main rotor, and a subsequent forced landing.

Which aircraft AD 00-25151 applies to

MakesAgusta

ModelsA109

Part-conditional — 109-0325-08-01, 109-0325-08-109.

Requires replacing main transmission aft support fitting P/N 109-0325-08-01 with airworthy P/N 109-0325-08-109 within a TIS-based schedule; establishes a 150-hour TIS life limit for P/N 109-0325-08-01. References Agusta Bollettino Tecnico 109K-25 and 109EP-7. Model family (A109) inferred from Agusta bulletin/part-number convention; specific sub-variant not stated in retrieved text.

Whether AD 00-25151 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 00-25151 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.