UNICOM
A UNICOM (Universal Communications) station is an air-ground communication facility operated by a non-air traffic control private agency to provide advisory service at uncontrolled aerodromes and airports and to provide various non-flight services, such as requesting a taxi, even at towered airports. It is also known as an Aeronautical Advisory Station. The equivalent European/ICAO service is known as (Aerodrome) Flight Information Service, abbreviated as AFIS or FIS.