STC SA4774NM
FAA DRS lists SA4774NM as Current · Reissued, held by Seaplane Works Inc., for Gulfstream American G-44, Gulfstream American G-44A, and Gulfstream American SCAN Type 30. Recorded change: Removal of the two existing engines and installation of one AVCO Lycoming Model TIO-540-J2BD and one LTIO-540-J2BD engine with Hartzell Model HC-C3YR-2UF/FC9587A-10 and HC-C3YR-2LUF/FJC9587A-10 propellers. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SA4774NM 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: Gulfstream American G-44, Gulfstream American G-44A, and Gulfstream American SCAN Type 30. 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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Fabrication of replacement engine exhaust system assembly (P/N PA18ESA).
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