Is AD 97-07-05 a recurring Airworthiness Directive?

No — AD 97-07-05 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 97-07-05 apply to?

AD 97-07-05 applies to Alliedsignal — models T5311, T5313, T5317, T53. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 97-07-05

one-time

Official AD 97-07-05 · FR doc 97-10766 · 1997-04-25 · turboshaft engine

Airworthiness Directives; AlliedSignal Inc. T5311, T5313, T5317, and T53 (Military) Series Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to AlliedSignal Inc. (formerly Textron Lycoming) T5311, T5313, T5317, and T53 series military engines approved for installation on aircraft certified in accordance with Section 21.25 of the Federal Aviation Regulations (FAR), that requires removal and replacement of the N2 spur gear nut retainer (lock cup). This amendment is prompted by reports of N2 spur gear nut retainer (lock cup) separation. The actions specified by this AD are intended to prevent N2 accessory drive assembly disengagement due to N2 spur gear nut retainer (lock cup) separation, which could result in an uncommanded engine acceleration.

Which aircraft AD 97-07-05 applies to

MakesAlliedsignal

ModelsT5311, T5313, T5317, T53

Also covers the T53 (military) series generically; certified in accordance with Section 21.25 or 21.27 of the FAR.

Whether AD 97-07-05 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 97-07-05 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.