The GNC 420W adds a TSO-certified 760-channel comm transceiver to the GPS 400Ws WAAS navigation capabilities and color display, creating the first color GPS/comm in the industry. GNC 420W has all of the IFR GPS and comm features of the GNS 430W minus the VOR, ILS or glideslope capability you may already have in your aircraft.
GNC 420W is easy to interface with a wide array of optional sensors and tracking systems, allowing you to see and avoid hazards such as threatening weather, lightning or air traffic. With an optional subscription to XM WX Satellite Weather and the addition of the GDL 69 or 69A datalink receiver, youll have access to up-to-the-minute, high resolution weather for the U.S., right in the cockpit. Information includes NEXRAD, METARs, TAFs, lightning and more and can be laid directly over Jeppesen and topographic map databases. With an additional monthly service fee, GDL 69A delivers XM Satellite Radio to your aircraft. Add the Garmin GTX 330 Mode S transponder, and GNC 420W will also display Traffic Information Services (TIS) alerts that identify surrounding air traffic.
With the GNC 420W, GARMIN has taken the navigation accuracy of a GPS and combined it with a 10-watt Comm and a color display to make the first color GPS/comm in the industry. With its frequency nomination feature, pilots can easily load their next Comm frequency into standby with the touch of a button. Additionally, the GNC 420W is a self-contained unit-meaning annunciation is included in one box-eliminating the need and additional expense of a separate annunciation unit. The GNC 420W is also TSO C129a certified for a non-precision approach.