Is AD 00-9109 a recurring Airworthiness Directive?

Yes — AD 00-9109 requires a repetitive inspection every 400 hours. Next-due depends on the aircraft's time in service.

Which aircraft does AD 00-9109 apply to?

AD 00-9109 applies to Aerospatiale — models AS-350B, AS-350BA, AS-350B1, AS-350B2, AS-350C, AS-350D, AS-350D1, AS-355E. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 00-9109

recurring

AD 00-9109 · 2000-04-18 · airframe

Airworthiness Directives; Eurocopter France Model AS-350B, BA, B1, B2, C, D, and D1, and AS-355E, F, F1, F2 and N Helicopters

What this AD requires

This amendment revises an existing airworthiness directive (AD), applicable to Eurocopter France Model AS-350B, BA, B1, B2, C, D, and D1, and AS-355E, F, F1, F2 and N helicopters, that currently requires repetitive inspections of the main rotor head components, the main gearbox (MGB) suspension bars, and the ground resonance prevention system components at intervals not to exceed 400 hours time-in-service (TIS). This amendment requires the same inspections, but at intervals not to exceed 500 hours TIS. This amendment is prompted by reports of confusion and unnecessary costs associated with the difference in the current 400 hours TIS inspection interval and the current manufacturer's master service recommendation of 500 hours TIS inspection interval. The actions specified by this AD are intended to eliminate confusion and unnecessary costs and to prevent ground resonance due to reduced structural stiffness, which could lead to failure of a main rotor head or MGB suspension component and subsequent loss of control of the helicopter.

Repetitive inspection. Re-inspect every 400 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 00-9109 applies to

MakesAerospatiale

ModelsAS-350B, AS-350BA, AS-350B1, AS-350B2, AS-350C, AS-350D, AS-350D1, AS-355E, AS-355F, AS-355F1, AS-355F2, AS-350, AS-355

Ground-resonance prevention inspection/rework of main rotor head components, main gearbox suspension bars (struts), and landing gear ground resonance components (aft spring blades, hydraulic shock absorbers). Per Aerospatiale SB 01.17a (AS-350 series) or SB 01.14a (AS-355 series), neither dated.

Whether AD 00-9109 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 00-9109 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.