Is AD 89-18-08 a recurring Airworthiness Directive?

No — AD 89-18-08 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 89-18-08

Q: Which aircraft does AD 89-18-08 apply to?

AD 89-18-08 applies to True Flight Holdings Llc, Socata - Groupe Aerospatiale, Gulfstream Aerospace Corporation — models AA-5, AA-5A, AA-5B, GA-7. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 89-18-08 · 1989-01-01 · airframe

Airworthiness Directives; ) Service Bulletin (SB) No. 176, dated July 26, 1989, or GAC S/B No. ME 22, dated July 26, 1989, as applicable. If contamination i

Which aircraft AD 89-18-08 applies to

MakesTrue Flight Holdings LlcSocata - Groupe AerospatialeGulfstream Aerospace Corporation

ModelsAA-5, AA-5A, AA-5B, GA-7

Comply with Service Bulletin (SB) No. 176, dated July 26, 1989, or GAC S/B No. ME 22, dated July 26, 1989, as applicable; if contamination is detected, clean the fuel system prior to further flight. Effective September 21, 1989.

Whether AD 89-18-08 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 89-18-08 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.

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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.