Is AD 97-19326 a recurring Airworthiness Directive?

No — AD 97-19326 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 97-19326

Q: Which aircraft does AD 97-19326 apply to?

AD 97-19326 applies to Avco Lycoming, Textron Lycoming — models O-320, IO-320, LIO-320, AIO-320, AEIO-320, O-360, LO-360, IO-360. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 97-19326 · 1997-07-28 · reciprocating engine

Airworthiness Directives; Avco Lycoming and Textron Lycoming Reciprocating Engines

What this AD requires

This amendment supersedes an existing airworthiness directive (AD), applicable to Avco Lycoming and Textron Lycoming reciprocating engines, that currently requires removal from service of defective piston pins, and replacement with serviceable parts. This amendment adds additional affected engine models that may have defective piston pins installed, and references a revised service bulletin. This amendment is prompted by the determination that additional engine models may have defective piston pins installed. The actions specified by this AD are intended to prevent piston pin failure, which could result in engine failure.

Which aircraft AD 97-19326 applies to

MakesAvco LycomingTextron Lycoming

ModelsO-320, IO-320, LIO-320, AIO-320, AEIO-320, O-360, LO-360, IO-360, LIO-360, VO-360, IVO-360, HO-360, HIO-360, LHIO-360, AIO-360, AEIO-360, TIO-360, TO-360, LTO-360, LTIO-360, O-480, GO-480, IGO-480, GSO-480, IGSO-480, O-540, IO-540, AEIO-540, TIO-540, LTIO-540, VO-540, IVO-540, TVO-540, TIVO-540, HIO-540, IGO-540, IGSO-540, TIO-541, TIGO-541, IO-720

Applies to the listed engine families (EXCLUDING O-540-J1A5D, -J1C5D, -J2A5D, -J3A5D, -J3C5D, -L3C5D and IO-540-W1A5D, -W3A5D, -AB1A5) that meet any one of: (1) serial number listed in Textron Lycoming Mandatory Service Bulletin No. 527C dated April 18, 1997; (2) had a Textron Lycoming cylinder kit installed after December 15, 1995; or (3) were overhauled, or had cylinder head maintenance performed, by a repair facility other than Textron Lycoming after December 15, 1995.

Whether AD 97-19326 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 97-19326 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.