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Other aircraft modifications

STC SA09284AC-D

FAA DRS lists SA09284AC-D as Current · Amended, held by S-TEC Corporation, for Sierra Hotel Aero Navion A (Army L-17B and L-17C), Sierra Hotel Aero Navion B, and Sierra Hotel Aero Navion D, and 4 more aircraft configurations. Recorded change: Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-725. Snapshot dated June 30, 2026.

FAA-listed holder
S-TEC Corporation
Aircraft configurations
7
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-725.

SA09284AC-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: Sierra Hotel Aero Navion A (Army L-17B and L-17C), Sierra Hotel Aero Navion B, and Sierra Hotel Aero Navion D, and 4 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Sierra Hotel Aero Navion A (Army L-17B and L-17C)A-782Sierra Hotel Aero Navion BA-782Sierra Hotel Aero Navion DA-782Sierra Hotel Aero Navion EA-782Sierra Hotel Aero Navion FA-782Sierra Hotel Aero Navion GA-782Sierra Hotel Aero Navion HA-782

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Sierra Hotel Aero Navion A (Army L-17B and L-17C) and Sierra Hotel Aero Navion B, and 5 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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