Avidyne Corporation, a leading provider of integrated flight deck and safety systems for general aviation aircraft, offers its AXP340 Mode S Transponder with ADS-B Out capability to meet the mandate for the NextGen airspace initiative. It transmits ADS-B Out information via Extended Squitter (ES) to appropriately equipped ground stations and other ADS-B In-equipped aircraft, providing improved airborne surveillance as well as vital information for airport ground surveillance. The AXP340 is a panel-mounted Class 1 (240 watt), Mode S, Level 2 1,090 MHz Datalink Transponder with Extended Squitter (ES) that meets all the requirements for Mode S elementary surveillance for both IFR and VFR flight. As a slide-in replacement for existing KT76A/KT78A transponders, the AXP340 is designed to easily upgrade existing Mode A/C equipment to Mode S, while adding additional functionality like a Direct-entry Numeric Keypad, Pressure Altitude & GPS Lat/Lon readout, Flight ID entry, one-touch VFR code entry, an easy-to-use Stop Watch Timer, Flight Timer, and Altitude Alerter. Some additional wiring is required to add ADS-B functionality. For more information visit www.avidyne.com.