what is icao
The International Civil Aviation Organization (ICAO, pronounced /aÉªËkeÉª.oÊ/; French: Organisation de l'aviation civile internationale, OACI), is a specialized agency of the United Nations.
The International Civil Aviation Organization was formed in 1947 under the auspices of the United Nations, and it established Flight Information Regions (FIRs) for controlling air traffic and making airport identification simple and clear.