Is AD 2002-17-51 a recurring Airworthiness Directive?

No — AD 2002-17-51 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2002-17-51 apply to?

AD 2002-17-51 applies to Agusta — models 109EP, 109. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2002-17-51

one-time

Official AD 2002-17-51 · FR doc 02-27792 · 2002-11-06 · airframe

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

What this AD requires

This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2002-17-51, which was sent previously to all known U.S. owners and operators of Agusta S.p.A. (Agusta) helicopters by individual letters. This AD requires installing a placard in the helicopter and marking the airspeed indication at 140 knots indicated airspeed (KIAS) to indicate a reduction in the helicopter never-exceed speed (Vne) of 28 KIAS; visually checking the tail roter blades on both sides for a crack before each start of the helicopter engines; visually inspecting the tail rotor blades with a 5x or higher magnifying glass at certain time intervals and anytime an increase in vibration occurs, and conducting a dye-penetrant inspection if necessary; and replacing any cracked tail rotor blade with an airworthy tail roter blade. The actions specified by this AD are intended to prevent failure of the tail roter blade and subsequent loss of control of the helicopter.

Which aircraft AD 2002-17-51 applies to

MakesAgusta

Models109EP, 109

Vne placard/airspeed-marking reduction (140 KIAS/-28 KIAS) and repetitive tail rotor blade crack inspection per Agusta BT 109EP-30 Rev A; specific helicopter serial-number applicability list is in the AD's preceding applicability provision, which was not captured in the extracted text.

Whether AD 2002-17-51 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 2002-17-51 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.