Duncan Aviation has certified a Rockwell Collins Pro Line 21 upgrade in the Dassault Falcon 50EX. The upgrade interfaces with the airplane’s existing Pro Line 4 avionics package, using original sensors, radios and autopilots. The upgrade provides full Pro Line 21 functionality, including access to graphical weather, electronic charts, airport diagrams, enhanced maps and WAAS LPV approach capability. Duncan has certified Pro Line 21 systems in the Falcon 50EX, Hawker 800A, Hawker 800XP and Astra 1125. The Lincoln, Neb.-based company is planning a similar upgrade package for the Falcon 2000 later this year.