Who created ICAO?

Established in 1947 by the Convention on International Civil Aviation (1944), which had been signed by 52 states three years earlier in Chicago, the ICAO is dedicated to developing safe and efficient international air transport for peaceful purposes and ensuring a reasonable opportunity for every state to operate ...



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As a Specialized Agency of the UN, ICAO works closely with the UN, and particularly with the Economic and Social Council. In light of its technical mandate, ICAO also works closely with other UN Specialized Agencies and International Organizations, such as: ?The International Telecommunications Union (ITU);

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Both IATA and ICAO are international organizations that oversee civil aviation operations. However, the IATA generally supports the airline industry, while the ICAO provides global standards for air transport operations. Furthermore, the IATA uses a different list of airport codes that passengers can easily relate to.

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The only non-Contracting States are the Holy See and Liechtenstein.

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The ICAO airport codes, also known as location indicators, are the four-letter sequences used by pilots and air traffic controllers in their charts, on-board systems and in communications.

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The following States were elected from among ICAO's 193 Member States to the Organization's 36 Member Governing Council during the 2022 ICAO Assembly. Australia, Brazil, Canada, China, France, Germany, Italy, Japan, United Kingdom and the United States.

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Airport codes are now assigned to airports by IATA, the International Air Transport Association, and no two airports can have the same code. (Note to pilots and dispatchers: these can be different than the four-character ICAO codes—i.e., DAL vs. KDAL, or LHR vs.

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