STC SA684SW
FAA DRS lists SA684SW as Current · Reissued, held by Rockwell Collins Inc, for Twin Commander Aircraft 680T, Twin Commander Aircraft 681, and Twin Commander Aircraft 680W, and 1 more aircraft configuration. Recorded change: Instalation of Collins AP-103F/FD-108 automatic flight control system. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SA684SW 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: Twin Commander Aircraft 680T, Twin Commander Aircraft 681, and Twin Commander Aircraft 680W, and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related flight controls STCs
Rudder and aileron interconnect installation.
FAA holder: Signature Flight Support Corporation
Replaced the wing flap fabric covering with aluminum sheet.
FAA holder: Signature Flight Support Corporation
Installation of rudder spring tab.
FAA holder: Signature Flight Support Corporation
Modification of flap and trailing edge.
FAA holder: Signature Flight Support Corporation
FAA record reference
- STC number
- SA684SW
- Product
- Aircraft · Small Multi-Engine
- Country
- United States
- Application date
- April 26, 1966
- Revision date
- April 24, 2000
- CFR references
- Part 21