Activitytype:Oversight, Authority management system, Air navigation services (ANS), Air traffic management (ATM), Air traffic services (ATS), Air traffic control services (ATC), Flight information services (FIS), Aerodrome flight information services (AFIS), Meteorological services (MET), Aeronautical information services (AIS), Data services (DAT), Communication services (COM), Navigation services (NAV), Surveillance services (SUR), Air traffic flow management (ATFM), Airspace management (ASM), Network functions (NF), European route network design (ERND), Radio frequency function (RFF), Transponder code function (TCF), Central air traffic flow management (central ATFM)