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Airworthiness Directive 88-21-05

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AD 88-21-05 · 1988-01-01 · airframe

Airworthiness Directives; This amendment, 39-6039, becomes effective on November 6, 1988. FOOTER: Aerostar Aircraft Corporation PA-60-600 (Aerostar 600) PA-

Which aircraft AD 88-21-05 applies to

MakesAerostar Aircraft Corporation
ModelsPA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P), PA-60-602P (Aerostar 602P), PA-60-700P (Aerostar 700P), PA-60

Amendment 39-6039, effective November 6, 1988.

Whether AD 88-21-05 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 88-21-05 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.

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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.