ICAO code
Appearance
The International Civil Aviation Organization (ICAO) defines several important codes for use in international aviation:
- ICAO airport codes : 4-letter codes like LSZH for Zuerich or HECA for Cairo
- ICAO airline designators : 3-letter codes like BAW for British Airways or AFR for Air France
- ICAO aircraft type designators : 4-letter codes like A320 for Airbus 320 or B772 for Boeing 777-200
- ICAO 24bit aircraft addresses : allocation of 24 bit addresses to states to uniquely identify aircraft worldwide