Is AD 79-19-02 a recurring Airworthiness Directive?

No — AD 79-19-02 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 79-19-02 apply to?

AD 79-19-02 applies to Mcdonnell Douglas — models C-9A, C-9B, VC-9C, DC-9. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 79-19-02

one-time

AD 79-19-02 · 1979-01-01 · airframe

Airworthiness Directives; replaced before further flight. If the cracked spar is repaired per McDonnell Douglas Service Sketch 27378, the inspection procedu

Which aircraft AD 79-19-02 applies to

MakesMcdonnell Douglas

ModelsC-9A, C-9B, VC-9C, DC-9

Per McDonnell Douglas Service Bulletin 55-28 Revision 4 (dated May 18, 1979), cracked wing spar must be repaired or replaced before further flight; if repaired per Service Sketch 27378, repeat the inspection at intervals of 1800 hours time-in-service thereafter.

Whether AD 79-19-02 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 79-19-02 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.