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Other aircraft modifications

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.

FAA-listed holder
Centerpointe Aerospace
Aircraft configurations
6
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Conversion of the Pratt & Whitney PT6T-3 to the PT6T-3B configuration.

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.

Sikorsky Aircraft S-58BT1H11Sikorsky Aircraft S-58DT1H11Sikorsky Aircraft S-58ET1H11Sikorsky Aircraft S-58FT1H11Sikorsky Aircraft S-58HT1H11Sikorsky Aircraft S-58JT1H11

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Sikorsky Aircraft S-58BT and Sikorsky Aircraft S-58DT, and 4 more aircraft configurations model, serial range, and configuration?
  2. 02Which configuration, parts, installation data, limitations, and ICAs apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

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