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Airworthiness Directive 91-08-04

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AD 91-08-04 · 1991-01-01 · appliance

Airworthiness Directives; -6925, AD 91-08-04) becomes effective on May 6, 1991. AVIATECH 1 FOOTER: Aviatech Inc. Bombardier Inc. Pilot and Co-Pilot seats DH

Which aircraft AD 91-08-04 applies to

MakesAviatech Inc.Bombardier Inc.
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-8-400, DHC-8-401, DHC-8-402, DHC-8

Applies to Aviatech Inc. Pilot and Co-Pilot seats installed on Bombardier DHC-8 series aircraft; effective May 6, 1991 (amendment 39-6925).

Whether AD 91-08-04 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 91-08-04 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.