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Airworthiness Directive 79-03-07

one-time
AD 79-03-07 · 1979-01-01 · appliance

Airworthiness Directives; the effective date of this AD, replace Globe Industries' P/N 22A571 or P/N 22A580 main rotor tachometer generator with Globe Indus

Which aircraft AD 79-03-07 applies to

MakesGlobe Industries
Part-conditional — 22A571, 22A580, 22A623.

Replace Globe Industries' main rotor tachometer generator P/N 22A571 or P/N 22A580 with Globe Industries' P/N 22A623 main rotor tachometer generator, in accordance with a Soloy service bulletin (number not given in excerpt).

Whether AD 79-03-07 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 79-03-07 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.