Airworthiness Directive 87-04-20
one-timeAD 87-04-20 · 1987-01-01 · airframe
Airworthiness Directives; March 16, 1987. FOOTER: Vulcanair S.p.A. P 68 P 68 Observer P 68B P 68C P 68C-TC P68TC Observer Vulcanair S.p.A.\P 68 Vulcanair S.
Which aircraft AD 87-04-20 applies to
ModelsP 68, P 68 Observer, P 68B, P 68C, P 68C-TC, P68TC Observer
Amendment 39-5547; effective March 16, 1987.
Whether AD 87-04-20 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 87-04-20 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.