STC SA1773SO
FAA DRS lists SA1773SO as Current · Reissued, held by Summit Aviation Inc, for Textron Aviation 500, Textron Aviation 550, and Textron Aviation S550. Recorded change: Installation of a third stand-by attitude gyro and dedicated power supply AIM P/N PE 24-1RM. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SA1773SO 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: Textron Aviation 500, Textron Aviation 550, and Textron Aviation S550. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related electrical systems STCs
Installation of SEB 505 starter-generator to replace Labinal Starter-generator.
FAA holder: American Eurocopter Corporation
Relocation and installation of aircraft battery per AEC Drawing List 117A82-1707 latest FAA approved revision.
FAA holder: American Eurocopter Corporation
Relocation of battery to tailboom.
FAA holder: American Eurocopter Corporation
Installation of second battery.
FAA holder: American Eurocopter Corporation
FAA record reference
- STC number
- SA1773SO
- Product
- Aircraft · Large Airplane
- Country
- United States
- Application date
- February 28, 1985
- Revision date
- July 14, 2023
- CFR references
- Part 25