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Other aircraft modifications

STC SA7781SW-D

FAA DRS lists SA7781SW-D as Current · Amended, held by S-TEC Corporation, for Textron Aviation 320-1, Textron Aviation 320, and Textron Aviation 320A, and 5 more aircraft configurations. Recorded change: Installation of S-TEC System 60 two axis automatic flight guidance system, model ST-199. Snapshot dated June 30, 2026.

FAA-listed holder
S-TEC Corporation
Aircraft configurations
8
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Installation of S-TEC System 60 two axis automatic flight guidance system, model ST-199.

SA7781SW-D 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 320-1, Textron Aviation 320, and Textron Aviation 320A, and 5 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Textron Aviation 320-13A25Textron Aviation 3203A25Textron Aviation 320A3A25Textron Aviation 320B3A25Textron Aviation 320C3A25Textron Aviation 320D3A25Textron Aviation 320E3A25Textron Aviation 320F3A25

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Textron Aviation 320-1 and Textron Aviation 320, and 6 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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