International Civil Aviation Organization
Headquartered in Montreal, Canada, the International Civil Aviation Organization (ICAO) develops the principles and techniques of international air navigation and fosters the planning and development of international air transport to ensure safe and orderly growth. The ICAO Council adopts standards and recommended practices concerning air navigation, prevention of unlawful interference, and facilitation of border-crossing procedures for international civil aviation.The ICAO should not be confused with the International Air Transport Association which is a trade organization for airlines.
Both ICAO and IATA have their own airport code systems.
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