INTERNATIONAL CIVIL AVIATION ORGANIZATION (ICAO)European Organisation for the Safety of Air Navigaition (EUROCONTROL) Civil Air Navigation Services Organisation (CANSO) European Aviation Safety Agency (EU)International Federation of Air Traffic Controllers' Associations (IFATCA) Int. Federation of Air Traffic Safety Electronics Association (IFATSEA) International Air Transport Association (IATA) International Federation of Air Line Pilots' Associations (IFALPA) European Union (EU) Single Sky website (EU)
