ICAO codes are four-letter alphanumeric designators assigned to airports and aeronautical stations around the world. These codes are established by the International Civil Aviation Organization to ensure consistent identification of locations in aviation. For example, the ICAO code for Los Angeles International Airport is KLAX. Each ICAO code begins with a letter that represents a specific region or country. The following letters indicate the specific airport or station within that area. This system helps pilots, air traffic controllers, and aviation professionals communicate clearly and avoid confusion when referring to different locations.