Is AD 81-16-05 a recurring Airworthiness Directive?

No — AD 81-16-05 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 81-16-05

Q: Which aircraft does AD 81-16-05 apply to?

AD 81-16-05 applies to Lycoming, Textron Lycoming, Avco Lycoming, Continental, Teledyne Continental, Teledyne-Continental, Tcm — models A-65, A-75, C-75, C-85, C-90, O-235, O-320, O-360. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 81-16-05 · 1981-01-01 · reciprocating engine

Airworthiness Directives; Teledyne-Continental A-65 C-90 O-470 A-75 O-200 IO-470 C-75 IO-360 IO-520 C-85 TSIO-360 TSIO-520 Lycoming O-235-C2C O-320-D3G O-36

Which aircraft AD 81-16-05 applies to

MakesLycomingTextron LycomingAvco LycomingContinentalTeledyne ContinentalTeledyne-ContinentalTcm

ModelsA-65, A-75, C-75, C-85, C-90, O-235, O-320, O-360, O-470, IO-360, IO-470, IO-520, TSIO-360, TSIO-520, O-200

specific Continental + Lycoming models — confirm exact model — applicability read from the AD title (pre-1994 directive, no full text on file) — confirm the exact engine model, serial, and compliance status from the records

Whether AD 81-16-05 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 81-16-05 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 →

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.