ATM Modernization, Business & GA

Butler National Approved for Learjet 35/36, 24/25 ADS-B Retrofit

By Juliet Van Wagenen | August 10, 2016

[Avionics Today 08-10-2016] Butler National, a manufacturer and provider of support systems for commercial and military aircraft, has received FAA Supplemental Type Certificate (STC) approval to install its Automatic Dependent Surveillance-Broadcast (ADS-B) Out avionics solution into Learjet model 24/25 and Learjet Model 35/36 series airplanes. The FAA STC allows for an ADS-B Out solution by retrofit of two existing transponders — the Garmin GTX-345R ADS-B In and Out or GTX-335R ADS-B Out transponders — and installation of the GTN 625, 725, 650 or 750 Navigator/GPS/Satellite-Based Augmentation System (SBAS) Wide Area Augmentation System (WAAS) for real-time aircraft location.

The approved installations allow equipment variation for multiple levels of functionality for the operator in addition to ADS-B Out compliance. The GTN installation may also provide full WAAS/Localizer Performance with Vertical guidance (LPV) coupled approach capability as well as roll-steering guidance to the autopilot. The GTX-345R installation offers ADS-B In functionality on applications for portable electronic devices, such as the iPad.

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