Automatic Terminal Information Service 自动终端情报服务
Automatic Terminal Information Service, or ATIS, is a continuous broadcast of recorded noncontrol aeronautical information in busier terminal (i.e. airport) areas. ATIS broadcasts contain essential information, such as weather information, which runways are active, available approaches, and any other information required by the pilots, such as important NOTAMs. Pilots usually listen to an available ATIS broadcast before contacting the local control unit, in order to reduce the controllers' workload and relieve frequency congestion.