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Airworthiness Directive 66-05-05

one-time
AD 66-05-05 · 1966-01-01 · turbine engine

Airworthiness Directives; with less than 5,000 cycles on the effective date of this AD in accordance with (d) before the accumulation of 5,050 cycles and th

Which aircraft AD 66-05-05 applies to

MakesPratt & Whitney

Specific engine model/make not stated in retrieved slice beyond a reference to a Pratt & Whitney Aircraft letter dated June 15, 1965. Parts with less than 5,000 cycles on the effective date must be inspected before accumulating 5,050 cycles, and thereafter at intervals not to exceed 100 hours time in service; parts are also reinspected within the last 700 hours (or 750 hours, per a differing threshold in the source) time in service since the prior fluorescent-penetrant and visual inspection, in accordance with the referenced Pratt & Whitney letter.

Whether AD 66-05-05 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 66-05-05 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.