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Other aircraft modifications

STC SA09421AC-D

FAA DRS lists SA09421AC-D as Current · Issued, held by S-TEC Corporation, for Raytheon Aircraft V35, Raytheon Aircraft V35A, and Raytheon Aircraft S35, and 1 more aircraft configuration. Recorded change: Installation of S-TEC system 40X/50X single and two axis automatic flight guidance systems, Model ST-780-40X/50X. Snapshot dated June 30, 2026.

FAA-listed holder
S-TEC Corporation
Aircraft configurations
4
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Installation of S-TEC system 40X/50X single and two axis automatic flight guidance systems, Model ST-780-40X/50X.

SA09421AC-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: Raytheon Aircraft V35, Raytheon Aircraft V35A, and Raytheon Aircraft S35, and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Raytheon Aircraft V353A15Raytheon Aircraft V35A3A15Raytheon Aircraft S353A15Raytheon Aircraft V35B3A15

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Raytheon Aircraft V35 and Raytheon Aircraft V35A, and 2 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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