Is AD 78-09-07 R3 a recurring Airworthiness Directive?

No — AD 78-09-07 R3 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 78-09-07 R3

Q: Which aircraft does AD 78-09-07 R3 apply to?

AD 78-09-07 R3 applies to Bendix — models S-20 Series, S-1200 Series, D-2000 Series, D-3000 Series, S-20, S-1200, D-2000, D-3000. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 78-09-07 R3 · 1978-01-01 · appliance

Airworthiness Directives; Bendix: Applies to Bendix S-20 Series, S-1200 Series, D-2000 Series, and D-3000 Series Magnetos

Which aircraft AD 78-09-07 R3 applies to

MakesBendix

ModelsS-20 Series, S-1200 Series, D-2000 Series, D-3000 Series, S-20, S-1200, D-2000, D-3000

Bendix magnetos — Applicability read from the AD teaser — confirm exact model/serial from the records.

Whether AD 78-09-07 R3 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 78-09-07 R3 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.