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Airworthiness Directive 77-08-08

one-time
AD 77-08-08 · 1977-01-01 · turbine engine

Airworthiness Directives; -50C, CF6-50C1, CF6-50D, CF6-50E, CF6-50E1, and CF6-50H engines that do not incorporate steel high pressure compressor rotors and

Which aircraft AD 77-08-08 applies to

MakesGeneral Electric
ModelsCF6-50C, CF6-50C1, CF6-50D, CF6-50E, CF6-50E1, CF6-50H, CF6-50

applicability read from the AD teaser — confirm exact model/serial from the records

Whether AD 77-08-08 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 77-08-08 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.

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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.