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Other aircraft modifications

STC SA09016AC-D

FAA DRS lists SA09016AC-D as Current · Amended, held by S-TEC Corporation, for Cessna Aircraft 320B, Cessna Aircraft 320C, and Cessna Aircraft 320D, and 2 more aircraft configurations. Recorded change: Installation of S-TEC System 55/55X two axis automatic flight guidance system, Model ST-594. Snapshot dated June 30, 2026.

FAA-listed holder
Aircraft configurations
5
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Installation of S-TEC System 55/55X two axis automatic flight guidance system, Model ST-594.

SA09016AC-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: Cessna Aircraft 320B, Cessna Aircraft 320C, and Cessna Aircraft 320D, and 2 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Cessna Aircraft 320B and Cessna Aircraft 320C, and 3 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?