Is AD 2011-10-12 a recurring Airworthiness Directive?

No — AD 2011-10-12 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2011-10-12 apply to?

AD 2011-10-12 applies to Eurocopter — models AS350B, AS350B1, AS350B2, AS350B3, AS350BA, EC130B4, AS350, EC130. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2011-10-12

one-time

Official AD 2011-10-12 · FR doc 2011-11795 · 2011-05-18 · airframe

Airworthiness Directives; Eurocopter France Model AS350B, B1, B2, B3, BA, and EC130 B4 Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for the specified Eurocopter France (ECF) helicopters. This AD results from a mandatory continuing airworthiness information (MCAI) AD issued by the aviation authority of the European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community. The superseding MCAI AD states that several engine flameouts have involved failure of the 41-tooth pinion in the engine accessory gearbox. Each affected helicopter had a starter-generator manufactured by one company. Investigation revealed the torque damping system of the starter-generator was inoperative due to incorrect adjustment that caused bending stresses on the 41-tooth pinion. Failure of the pinion causes the engine fuel pump to stop operating, resulting in an engine flameout. The EASA AD requires a new adjustment procedure to optimize the performance of the specified starter-generator damping assembly. This AD is intended to prevent failure of a pinion and a fuel pump, engine flameout, and subsequent loss of control of the helicopter.

Which aircraft AD 2011-10-12 applies to

MakesEurocopter

ModelsAS350B, AS350B1, AS350B2, AS350B3, AS350BA, EC130B4, AS350, EC130

Part-conditional — 150SG122Q, 200SGL130Q.

Applies only to helicopters with an Aircraft Parts Corporation (APC) starter-generator, P/N 150SG122Q or P/N 200SGL130Q, installed, without '004' marked on the identification plate.

Whether AD 2011-10-12 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 2011-10-12 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.