Primoco UAV, recently demonstrated the successful completion of a 15 hour and three-minute continuous unmanned flight. Utilizing Sagetech Avionics' transponders integrated with UAV Navigation's Vector autopilot, The Primoco Model One 150 shattered the previous company record of 12 hours, eight minutes. The ADS-B out feature of Sagetech Avionics' XPS transponder allowed for the aircraft to be seen by Air Traffic Control as well as other aircraft in the area, providing an essential safety aspect for unmanned systems interacting with manned aviation. The unmanned aircraft flew 1650 km at an average fuel consumption of 2.2 liters per hour of flight. UAV Navigation and Sagetech Avionics Inc. collaborate on the integration of the XP and MX families of transponders with the flight control solution. Sagetech's low SWaP and reliable transponders are entirely compatible with VECTOR, UAV Navigation's autopilot. Sagetech's Mode S ADS-B transponders enable the seamless and safe incorporation of unmanned flight into manned airspace.