Is AD 98-12-12 a recurring Airworthiness Directive?

No — AD 98-12-12 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-12-12 apply to?

AD 98-12-12 applies to Allison Engine Company — models AE 3007A, AE 3007. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-12-12

one-time

Official AD 98-12-12 · FR doc 98-15088 · 1998-06-09 · turbine engine

Airworthiness Directives; Allison Engine Company Model AE 3007A Turbofan Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to Allison Engine Company Model AE 3007A turbofan engines. This action requires reprogramming the Full Authority Digital Engine Control (FADEC) to the latest, improved software version. This amendment is prompted by reports of inflight engine shutdowns due to inadequate fault accommodation logic. The actions specified in this AD are intended to prevent inflight engine shutdowns due to inadequate fault accommodation logic.

Which aircraft AD 98-12-12 applies to

MakesAllison Engine Company

ModelsAE 3007A, AE 3007

Installed on but not limited to Embraer EMB-145 series aircraft; applies to each identified engine regardless of modification, alteration, or repair status.

Whether AD 98-12-12 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 98-12-12 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.