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Airworthiness Directive 73-12-05

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AD 73-12-05 · 1973-01-01 · airframe

Airworthiness Directives; Eastern Region. Amendment 39-1656 was effective June 14, 1973. Amendment 39-2078 was effective January 28, 1975. This Amendment 39

Which aircraft AD 73-12-05 applies to

MakesMaryland Air Industries, Inc.
ModelsF-27, F-27A, F-27B, F-27F, F-27G, F-27J, F-27M, FH-227, FH-227B, FH-227C, FH-227D, FH-227E

FAA Eastern Region. Amendment 39-1656 effective June 14, 1973; Amendment 39-2078 effective January 28, 1975; Amendment 39-3543 effective August 29, 1979.

Whether AD 73-12-05 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 73-12-05 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.