Stevens Aviation has received an approved model list (AML) STC for installation of the FreeFlight Systems 1203C SBAS/GNSS sensor along with L3’s NXT mode-S transponders, to provide a reasonably priced ADS-B Out solution for several Part 25 business aircraft. The first installation was done in a Cessna Citation 650 with non-integrated avionics by Stevens Aviation’s Dayton, Ohio avionics team.

L3’s NXT-600 is a form-factor replacement for the ACSS RCZ-852 transponder, according to Stevens Aviation, and it can also replace the Rockwell Collins TDR-94D. The ADS-B Out upgrade covers other GPS sensors and includes two NXT-600 transponders and for accurate position information, the FreeFlight 1203C GPS sensor, an L3 NXG-900 GPS, or upgrade of existing Universal Avionics FMS. Both the NXG-900 and 1203C were installed in two separate Citation 650 upgrades, according to FreeFlight Systems.

The 1203C sensor can also “serve as as the approved position source for TAWS/FMS, RNP, and other NextGen applications and allows customers to take advantage of the operational and safety benefits provided by the NextGen airspace transformation without the need for extensive and costly avionics upgrades,” FreeFlight explained.