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Airworthiness Directive 86-16-51

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AD 86-16-51 · 1986-01-01 · airframe

Airworthiness Directives; effective by telegraphic AD T86-16-51, issued August 15, 1986. FOOTER: Bombardier Inc. DHC-8-101 DHC-8-102 DHC-8-103 DHC-8-106 DHC

Which aircraft AD 86-16-51 applies to

MakesBombardier Inc.De Havilland
ModelsDHC-8-101, DHC-8-102, DHC-8-103, DHC-8-106, DHC-8-201, DHC-8-202, DHC-8-301, DHC-8-311, DHC-8-315, DHC-8

Originally issued as telegraphic AD T86-16-51, effective August 15, 1986 (amendment 39-5433); extracted text also shows "DEHAVILLAND: Applies to DeHavilland Model DHC" (truncated), reflecting the original type-certificate holder name before Bombardier.

Whether AD 86-16-51 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 86-16-51 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.