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Airworthiness Directive 74-12-10

one-time
AD 74-12-10 · 1974-01-01 · airframe

Airworthiness Directives; the Chief, Engineering and Manufacturing District Office, FAA, Pacific-Asia Region. This amendment becomes effective June 12, 1974

Which aircraft AD 74-12-10 applies to

MakesMitsubishi Heavy IndustriesNihon Aeroplane Manufacturing Company
ModelsYS-11, YS-11A-200, YS-11A-300, YS-11A-500, YS-11A-600

Effective June 12, 1974; alternate methods of compliance approved by the Chief, Engineering and Manufacturing District Office, FAA, Pacific-Asia Region. Full defect description not present in captured excerpt.

Whether AD 74-12-10 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 74-12-10 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.