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Airworthiness Directive 81-05-04

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AD 81-05-04 · 1981-01-01 · propeller

Airworthiness Directives; SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 81-05-04 DOWTY ROTOL: Amendment 39-4132. Applies to Dowty Rotol (c)R.289/3-110- F/1 an

Which aircraft AD 81-05-04 applies to

MakesDowty RotolWsk-PezetelGulfstream American (Grumman)Ayres (Rockwell)
ModelsR.289/3-110-F/1, R.289/3-110-F/11, PZL-3S, G-164A, G-164B, G-164C, S2R, R.289/3-110-F, G-164

Dowty Rotol R.289/3-110-F/1 and /11 propellers on WSK-Pezetel PZL-3S engines, installed via STC SA2731SW on Gulfstream American (formerly Grumman) G-164A/B/C and Ayres (formerly Rockwell) S2R agricultural airplanes.

Whether AD 81-05-04 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 81-05-04 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.