STC ST03947AT
FAA DRS lists ST03947AT as Current · Issued, held by Stevens Aviation Inc., for Cessna Aircraft 550. Recorded change: Electronic Flight Instrument System, Attitude Heading Reference System, Air Data System, Mode S Transponders, Standby Instruments, WAAS FMS, Terrain Awareness Warning System, and Vision 1 Systemon the Cessna Model 550, Citation II aircraft. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
ST03947AT 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: Cessna Aircraft 550. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related avionics STCs
Version 7.1 Software upgrade or Installation of the Aviation Communication & Surveillance Systems (ACSS) TCAS II, Model TCAS 2000, P/N 7517900-10020. The installation also includes a Mode S ATC Transponder System, Model XS-950, P/N 7517800-10007.
FAA holder: Aviation Communication and Surveillance Systems (ACSS) LLC
Version 7.1 Software upgrade of the Aviation Communication & Surveillance Systems (ACSS) TCAS II, Model TCAS 2000, P/N 7517900-10020 (Configuration 1) or Model T2CAS, P/N 9000000-11414 (Configuration 2). This upgrade allows for the installation of Configuration 1 TCAS II. The installation also includes a Mode S ATC Transponder System with ADS-B Out, Model XS-950, P/N 7517800- 10400.
FAA holder: Aviation Communication and Surveillance Systems (ACSS) LLC
Installation of the Universal Avionics FANS-1A+ in Gulfstream Aerospace Corporation model G-1159A aircraft.
FAA holder: Gardner Aviation Services
FAA record reference
- STC number
- ST03947AT
- Product
- Aircraft · Large Multi-Engine
- Country
- United States
- Application date
- March 17, 2009
- Revision date
- January 3, 2012
- CFR references
- Part 21, Part 25