Is AD 2003-03-12 a recurring Airworthiness Directive?

No — AD 2003-03-12 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2003-03-12

Q: Which aircraft does AD 2003-03-12 apply to?

AD 2003-03-12 applies to Turbomeca — models Arriel 1D, Arriel 1D1, Arriel 1S, Arriel 1S1, Arriel 1A2, Arriel 1C, Arriel 1C1, Arriel 1C2. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2003-03-12 · FR doc 03-2093 · 2003-01-31 · turboshaft engine

Airworthiness Directives; Turbomeca S.A. Arriel 1 A2, 1 C, 1 C1, 1 C2, 1 D, 1 D1, 1 E2, 1 K, 1 K1, 1 S, 1 S1 and Arriel 2 B, 2 B1, 2 C, 2 C1, 2 S1 Series Turboshaft Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD), that is applicable to Turbomeca S.A. Arriel 1 A2, 1 C, 1 C1, 1 C2, 1 D, 1 D1, 1 E2, 1 K, 1 K1, 1 S, 1 S1 and Arriel 2 B, 2 B1, 2 C, 2 C1, 2 S1 series turboshaft engines. This amendment requires the insertion of a sleeve in the attachment boss of the compressor bleed valve, and bonding the sleeve in the bleed-valve mounting pad. This amendment is prompted by several cases of contained centrifugal compressor impeller blade ruptures that occurred in service. The actions specified by this AD are intended to prevent acoustic excitation of the centrifugal compressor impeller blades resulting in contained compressor impeller blade ruptures and power loss that could lead to an uncommanded in- flight shutdown.

Which aircraft AD 2003-03-12 applies to

MakesTurbomeca

ModelsArriel 1D, Arriel 1D1, Arriel 1S, Arriel 1S1, Arriel 1A2, Arriel 1C, Arriel 1C1, Arriel 1C2, Arriel 1E2, Arriel 1K, Arriel 1K1, Arriel 2B, Arriel 2S1, Arriel 2B1, Arriel 2C, Arriel 2C1, Arriel

Part-conditional — 0 292 15 333 0.

Incorporation of compressor bleed-valve modification TU 300 + TU 316A (Arriel 1 variants) or TU 54 + TU 70A (Arriel 2 variants) per Turbomeca MSBs; specific instructions depend on whether TU 300 (Arriel 1) or TU 54 (Arriel 2) is already incorporated on the individual engine.

Whether AD 2003-03-12 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 2003-03-12 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.