Avionics
Butler STCs Learjet 24/25 and 35/36 ADS-B Upgrade
With the addition of the new STCs, Butler National now provides ADS-B upgrades for the Learjet 24/25, 35/36 and 60 models.

The FAA has issued supplemental type certificate approval to Butler National for ADS-B OUT upgrades for the Learjet 24/25 and 35/36. The 24/25 upgrade is an expansion of Butler’s existing Learjet 60 ADS-B upgrade.

The STCs are for replacement of the existing transponders with Garmin’s GTX 345R (ADS-B OUT and IN) or GTX 335R (ADS-B OUT only) along with a GTN series touchscreen navigator to provide the required position source. The GTN can also provide WAAS LPV coupled approach capability and roll steering guidance to the autopilot. The GTX-345R delivers ADS-B IN information to mobile devices.