STC SR04549AT
FAA DRS lists SR04549AT as Current · Reissued, held by Centerpointe Aerospace, for Sikorsky Aircraft S-58BT, Sikorsky Aircraft S-58DT, and Sikorsky Aircraft S-58ET, and 3 more aircraft configurations. Recorded change: Conversion of the Pratt & Whitney PT6T-3 to the PT6T-3B configuration. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SR04549AT 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: Sikorsky Aircraft S-58BT, Sikorsky Aircraft S-58DT, and Sikorsky Aircraft S-58ET, and 3 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
Related other aircraft modifications STCs
Change to the Layout of Passenger Accommodations.
FAA holder: Duncan Aviation Inc
Limit the maximum number of passenger seats to 9.
FAA holder: Lake Clark Air Inc.
Installation of the Audio System.
FAA holder: Cascade Aerospace Inc.