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Airworthiness Directive 86-06-04

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AD 86-06-04 · 1986-01-01 · airframe

Airworthiness Directives; recipients of Priority Letter AD 86-06-04 dated March 19, 1986. FOOTER: Textron Aviation Inc. DH.125 Series 1A DH.125 Series 1A-52

Which aircraft AD 86-06-04 applies to

MakesTextron Aviation Inc.
ModelsDH.125 Series 1A, DH.125 Series 1A-522, DH.125 Series 1A/S-522, DH.125 Series 3A, DH.125

Issued to recipients of Priority Letter AD 86-06-04 dated March 19, 1986. Historic manufacturer designator not present in retrieved excerpt; footer lists current type-certificate holder Textron Aviation Inc. for DH.125 series models.

Whether AD 86-06-04 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 86-06-04 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.