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Engine and powerplant

STC SA1481CE

FAA DRS lists SA1481CE as Current · Reissued, held by Helio Alaska Inc., for Helio Aircraft HST-550. Recorded change: Installation of Pratt & Whitney (UACL) PT6A-27 turboprop engine and Hartzell HC-B3TN-3D/T10178CH reversible propeller. Snapshot dated June 30, 2026.

FAA-listed holder
Helio Alaska Inc.
Aircraft configurations
1
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of Pratt & Whitney (UACL) PT6A-27 turboprop engine and Hartzell HC-B3TN-3D/T10178CH reversible propeller.

SA1481CE 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: Helio Aircraft HST-550. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Helio Aircraft HST-550A4EA

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Helio Aircraft HST-550 model, serial range, and configuration?
  2. 02Which powerplant configuration, limits, instruments, and maintenance data 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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