Airworthiness Directive 90-08-17
one-timeAD 90-08-17 · 1990-01-01 · airframe
Airworthiness Directives; Docket No. 89-CE-39-AD. Applicability: Models 65-90, 65-A90, B90, C90 and C90A (Serial Numbers (S/N) LJ-1 through LJ-1222); E90, F
Which aircraft AD 90-08-17 applies to
MakesDocket No 89-Ce-39-Ad Applicability
Models65-90, 65-A90, B90, C90, C90A
Serial-conditional — narrows to serials LJ-1–LJ-1222, BB-2–BB-1344, FA-1–FA-204, FF-1–FF-19, LJ-1–LJ-1222.
Whether AD 90-08-17 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 90-08-17 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.