Previous TC20 SERVICE BULLETINS FOR PILOTS
TC20 Transponder Control Head
Software versions run numerically, the higher the number the more recent the release – so the latest software will always include all the features of earlier versions.
04/09/2017 version 1.14 – Current software version
This software adds support for Trig TN72 as a FAR 91.227 compliant ADS-B position source and adds GPS only air-ground determination algorithm for ADS-B Out.
17/09/2015 version 1.12
Introduction of support for TSO-C199 TABS GPS position sources. This requires that the associated TT21 / TT22 hardware unit is loaded with software at level 2.7 or above.
22/10/2013 version 1.10
This adds manual adjustment of the control head LCD backlight brightness.
11/05/2012 version 1.7
This version adds configuration support for DO-260B ADS-B installations. Introduced configuration to connect to Garmin ADS-B position sources.
09/03/2010 version 1.3
This software adds the ability to receive TIS ‘A’ traffic in relevant US airspace