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Other aircraft modifications

STC SA5171SW-D

FAA DRS lists SA5171SW-D as Current · Amended, held by S-TEC Corporation, for Beechcraft A36, Beechcraft A36TC, and Beechcraft B36TC, and 1 more aircraft configuration. Recorded change: Installation of S-TEC System 40/50 single and two axis automatic flight guidance systems Model ST-173-40/50. Snapshot dated June 30, 2026.

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

Recorded modification

What the FAA record covers

Installation of S-TEC System 40/50 single and two axis automatic flight guidance systems Model ST-173-40/50.

SA5171SW-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: Beechcraft A36, Beechcraft A36TC, and Beechcraft B36TC, and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Beechcraft A363A15Beechcraft A36TC3A15Beechcraft B36TC3A15Beechcraft F33A3A15

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Beechcraft A36 and Beechcraft A36TC, 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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