Airworthiness Directive 88-20-08
one-timeAD 88-20-08 · 1988-01-01 · propeller
Airworthiness Directives; HEADING: HAMILTON STANDARD Models 14SF-5 and 14SF-7 Propellers ACTION: SUMMARY: DATES: Effective October 31, 1988. ADDRESSES: FOR
Which aircraft AD 88-20-08 applies to
MakesHeading Hamilton Standard
Models14SF-5, 14SF-7
Whether AD 88-20-08 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 88-20-08 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.
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.