Is AD 99-02-09 a recurring Airworthiness Directive?

No — AD 99-02-09 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 99-02-09 apply to?

AD 99-02-09 applies to Agusta — models A109. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 99-02-09

one-time

Official AD 99-02-09 · FR doc 99-908 · 1999-01-15 · airframe

Airworthiness Directives; Agusta S.p.A. Model A109C and A109K2 Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to Agusta S.p.A. Model A109C and A109K2 helicopters. This amendment requires removing the main rotor pitch link assemblies, measuring the radial play of the upper and lower spherical bearings (bearings), and replacing any unairworthy bearings. This amendment is prompted by four reports of increased vibration of the helicopters caused by wear in the bearings of the main rotor pitch change link assembly. The actions specified by this AD are intended to detect unairworthy bearings on the pitch change link assembly and to prevent increased vibration and subsequent reduced controllability of the helicopter.

Which aircraft AD 99-02-09 applies to

MakesAgusta

ModelsA109

Part-conditional — 109-0110-71.

Main rotor pitch change link assembly P/N 109-0110-71; repetitive (100-hour TIS) spherical bearing radial play measurement, replace bearing if play exceeds 0.2mm/.008in. Per Agusta Bollettino Tecnico 109-9.

Whether AD 99-02-09 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 99-02-09 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.