Is AD 2008-07-01 a recurring Airworthiness Directive?

Yes — AD 2008-07-01 requires a repetitive inspection every 1500 hours. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2008-07-01 apply to?

AD 2008-07-01 applies to Turbomeca — models 1B, 1D, 1D1, 1S1, Arriel. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2008-07-01

recurring

Official AD 2008-07-01 · FR doc E8-5819 · 2008-03-26 · 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 currently requires initial and repetitive position checks of the gas generator 2nd stage turbine blades on all Turbomeca Arriel 1B, 1D, 1D1, and 1S1 turboshaft engines. That AD also currently requires initial and repetitive replacements of 2nd stage turbines on 1B, 1D, and 1D1 engines only. This AD requires adding a 3,000 hour life limit to Arriel 1B 2nd stage turbine blades. This AD results from reports of failures of second stage turbine blades. We are issuing this AD to prevent failures of the 2nd stage turbine blades, which could result in uncommanded in-flight engine shutdown, and subsequent forced autorotation landing or accident.

Repetitive inspection. Re-inspect every 1500 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 2008-07-01 applies to

MakesTurbomeca

Models1B, 1D, 1D1, 1S1, Arriel

Part-conditional — TU 148, TU 347.

Applies to Arriel 1B engines fitted with 2nd stage turbine modification TU 148, and to Arriel 1D, 1D1, and 1S1 engines that do NOT incorporate modification TU 347.

Whether AD 2008-07-01 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 2008-07-01 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.