STC SA3961WE
FAA DRS lists SA3961WE as Current · Reissued, held by Thrush Aircraft Inc., for Ayres S-2R. Recorded change: Installation of extended engine mount, revised cowling and induction system, Hamilton Standard 22D40 or 12D40 constant speed propeller, and modified elevator trim tab system in accordance with Serv-Aero Engineering, Inc. FAA sealed Master Drawing List MDL5379, dated May 3, 1979, or later FAA approved revision. Pratt and Whitney R1340-AN-1 engine previously installed per Type Certificate A4SW is required with this installation. (Restricted Category). Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SA3961WE identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.
Applicability
Aircraft named in FAA DRS
Named aircraft: Ayres S-2R. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
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Related engine and powerplant STCs
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FAA holder: Aviation Development Corporation
Manufacture of composite engine cowlings.
FAA holder: North Central Aircraft Products Inc.