Is AD 2010-10-09 a recurring Airworthiness Directive?

Yes — AD 2010-10-09 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2010-10-09 apply to?

AD 2010-10-09 applies to Turbomeca — models Arriel 1B, Arriel 1D, Arriel 1D1, Arriel 1S1, Arriel. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2010-10-09

recurring

Official AD 2010-10-09 · FR doc 2010-10720 · 2010-05-17 · turboshaft engine

Airworthiness Directives; Turbomeca Arriel 1B, 1D, 1D1, and 1S1 Turboshaft Engines

What this AD requires

The FAA is superseding an existing airworthiness directive (AD) for certain Turbomeca Arriel 1B, 1D, 1D1, and 1S1 turboshaft engines. That AD requires initial and repetitive relative position checks of the gas generator 2nd stage turbine blades on Turbomeca Arriel 1B (that incorporate Turbomeca Modification (mod) TU 148), Arriel 1D, 1D1, and 1S1 turboshaft engines that do not incorporate mod TU 347. That AD also requires initial and repetitive replacements of 2nd stage turbines on Arriel 1B, 1D, and 1D1 engines. This AD requires lowering the initial and repetitive thresholds for replacement of 2nd stage turbines on Arriel 1B, 1D, and 1D1 engines. This AD results from reports of new cases of failures of 2nd stage turbine blades since we issued AD 2008-07-01. We are issuing this AD to prevent the failure of 2nd stage turbine blades, which could result in an uncommanded in- flight engine shutdown, and a subsequent forced autorotation landing or accident.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2010-10-09 applies to

MakesTurbomeca

ModelsArriel 1B, Arriel 1D, Arriel 1D1, Arriel 1S1, Arriel

Arriel 1B engines apply only if they incorporate Turbomeca Modification (mod) TU148. All listed engines apply only if they do not incorporate mod TU347.

Whether AD 2010-10-09 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 2010-10-09 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.