Is AD 79-12-04 a recurring Airworthiness Directive?

No — AD 79-12-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 79-12-04 apply to?

AD 79-12-04 applies to Airesearch Manufacturing Company Of Arizona — models TPE 331-10-501G, TPE331. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 79-12-04

one-time

AD 79-12-04 · 1979-01-01 · turboprop engine

Airworthiness Directives; the possible hazard from the total loss of power of one or more engines during a single flight resulting from the failure of the f

Which aircraft AD 79-12-04 applies to

MakesAiresearch Manufacturing Company Of Arizona

ModelsTPE 331-10-501G, TPE331

Addresses possible hazard of total loss of power from one or more engines during a single flight due to failure of the forged third-stage turbine wheel blade; action required within the next 10 operating hours time-in-service; alternative actions may be approved by the Chief, Aircraft Engineering Division, FAA Western Region.

Whether AD 79-12-04 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 79-12-04 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 →

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.