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Airworthiness Directive 74-24-09

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AD 74-24-09 · 1974-01-01 · appliance

Airworthiness Directives; This amendment 39-2390 becomes effective November 19, 1975. FOOTER: Airbus SAS Airesearch The Boeing Company Dassault Aviation Goo

Which aircraft AD 74-24-09 applies to

MakesAirbus SasAiresearchThe Boeing CompanyDassault AviationGoodyear Aircraft CorporationTextron Aviation Inc.Israel Aircraft Industries, Ltd.Lockheed Martin Corporation
ModelsHS.125 Series F3B/RA, HS.125 Series F400B, HS.125 Series F403B, HS.125 Series F600B, 1121, 1121A, 1121B, 1329-23A, 1329-23D, 1329-23E, HS.125, 1329-23

Amendment 39-2390, effective November 19, 1975. Source text truncated; lists many manufacturers/models (Airbus, Boeing, Dassault, Goodyear, Textron HS.125 series, IAI 1121 series, Lockheed 1329-23 series) suggesting a common installed component/appliance, but the underlying subject was not captured.

Whether AD 74-24-09 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 74-24-09 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.