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Other aircraft modifications

STC SA8908SW-D

FAA DRS lists SA8908SW-D as Current · Amended, held by S-TEC Corporation, for Cessna Aircraft 335, Cessna Aircraft 340, and Cessna Aircraft 340A. Recorded change: Installation of S-TEC System 55 Two Axis automatic flight guidance system, Model ST-575, with optional autotrim system. Snapshot dated June 30, 2026.

FAA-listed holder
S-TEC Corporation
Aircraft configurations
3
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Installation of S-TEC System 55 Two Axis automatic flight guidance system, Model ST-575, with optional autotrim system.

SA8908SW-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 335, Cessna Aircraft 340, and Cessna Aircraft 340A. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Cessna Aircraft 3353A25Cessna Aircraft 3403A25Cessna Aircraft 340A3A25

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Cessna Aircraft 335 and Cessna Aircraft 340, and 1 more aircraft configuration 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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