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Engine and powerplant

STC ST09559AC

FAA DRS lists ST09559AC as Current · Reissued, held by Sierra Industries Ltd., for Textron Aviation 500, Textron Aviation 550, and Textron Aviation S550, and 1 more aircraft configuration. Recorded change: Installation of Williams/Rolls FJ44-2A engine. Installation of STC SA732NW required for this mod. Snapshot dated June 30, 2026.

FAA-listed holder
Sierra Industries Ltd.
Aircraft configurations
4
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of Williams/Rolls FJ44-2A engine. Installation of STC SA732NW required for this mod.

ST09559AC 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: Textron Aviation 500, Textron Aviation 550, and Textron Aviation S550, and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Textron Aviation 500A22CETextron Aviation 550A22CETextron Aviation S550A22CETextron Aviation 501A27CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Textron Aviation 500 and Textron Aviation 550, and 2 more aircraft configurations 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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