WASHINGTON–The FAA will use its officially designated unmanned aircraft systems (UAS) test sites to demonstrate a low-altitude UAS Traffic Management (UTM) system for drones, as required by Congress. The agency plans to issue a request for information (RFI) this week to the seven UAS test sites, said Steve Bradford, FAA chief scientist for architecture. Based on responses to the RFI, it will choose some or all of the test sites to conduct a demonstration under the UTM System Pilot ...