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Airworthiness Directive 76-04-08

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AD 76-04-08 · 1976-01-01 · airframe

Airworthiness Directives; Messerschmitt-Bolkow-Blohm Model BO 209 "Monsun" Airplanes

Which aircraft AD 76-04-08 applies to

MakesMesserschmitt-Bolkow-Blohm
ModelsBO 209 Monsun, BO 209

Applies to all Model BO 209 'Monsun' airplanes, certificated in all categories, except those [exception clause truncated in source text]; addresses structural crack per Service Bulletin No. 209-15/71-20, dated July 1975.

Whether AD 76-04-08 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 76-04-08 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.