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Other aircraft modifications

STC SA09285AC-D

FAA DRS lists SA09285AC-D as Current · Reissued, held by S-TEC Corporation, for Piper Aircraft PA-31, Piper Aircraft PA-31-300, and Piper Aircraft PA-31-325, and 1 more aircraft configuration. Recorded change: Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-727-20/30, according to Bulletin No. 827, Revision 6, dated 1-21-11 and Master Drawing List No. 921029, Revision F, dated 1-21-11 or later FAA Approved revisions of the above data (28 Volt System). Snapshot dated June 30, 2026.

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

Recorded modification

What the FAA record covers

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-727-20/30, according to Bulletin No. 827, Revision 6, dated 1-21-11 and Master Drawing List No. 921029, Revision F, dated 1-21-11 or later FAA Approved revisions of the above data (28 Volt System).

SA09285AC-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: Piper Aircraft PA-31, Piper Aircraft PA-31-300, and Piper Aircraft PA-31-325, and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Piper Aircraft PA-31A20SOPiper Aircraft PA-31-300A20SOPiper Aircraft PA-31-325A20SOPiper Aircraft PA-31-350A20SO

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Piper Aircraft PA-31 and Piper Aircraft PA-31-300, 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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