On September 28, the flight test team of AVIC Helicopter Design and Research Institute, an enterprise in Tianjin Port Free Trade Zone, successfully completed all the flight test tasks and set a new record. The AR-500C unmanned helicopter developed by the institute successfully underwent a test flight at Daocheng Yading Airport, an airport at the altitude of 4,411 meters. This set a new record of take-off and landing altitude of the home made unmanned helicopter, and verified the full-territory flight capability of the AR-500C unmanned helicopter.