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Airworthiness Directive 78-09-04

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AD 78-09-04 · 1978-01-01 · airframe

Airworthiness Directives; Modification 779, or an FAA-approved equivalent. This amendment becomes effective May 24, 1978. FOOTER: de Havilland Aircraft Co.,

Which aircraft AD 78-09-04 applies to

MakesDe Havilland Aircraft Co., Ltd.
ModelsD.H. 104 Dove Series 1A, D.H. 104 Dove Series 2A, D.H. 104 Dove Series 5A, D.H. 104 Dove Series 5BA, D.H. 104 Dove Series 6A, D.H. 104 Dove Series 8AXC, D.H. 104 Dove

Footer list partially visible in this excerpt (applicability read from the AD teaser — confirm exact model/serial from the records.)

Whether AD 78-09-04 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 78-09-04 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.