Garmin is upgrading the features and capabilities of its touchscreen GTN series navigators with the addition of optional Class A TAWS capability, ADS-B Out compatibility with third-party transponders and the ability for pilots to create custom messages on the GTN display. The enhancements are available now in new GTN units as well as through a free software update for current GTN owners.
Class A TAWS provides the highest level of terrain alerting capability by providing warnings for excessive closure rate, glideslope deviation and the threat of terrain impact when the aircraft is not in landing configuration. Class-A TAWS capability is mandated in certain large turbine-powered airplanes.
