The International Civil Aviation Organization (ICAO), (French: Organisation de l'aviation civile internationale, OACI). ICAO is a specialized agency for aviation of the United Nations.
ICAO headquarters is located in the Quartier International of Montreal, Quebec, Canada.
The ICAO Council adopts standards and recommended practices concerning air navigation, its infrastructure, flight inspection, prevention of unlawful interference, and facilitation of border-crossing procedures for international civil aviation.
In addition, the ICAO defines the protocols for air accident investigation followed by transport safety authorities in countries signatory to the Convention on International Civil Aviation, commonly known as the Chicago Convention.
The Air Navigation Commission (ANC) is the technical body within ICAO.
The forerunner to the ICAO was the International Commission for Air Navigation (ICAN).
It held its first convention in 1903 in Berlin, Germany but no agreements were reached among the eight countries that attended.
At the second convention in 1906, also held in Berlin, 27 countries attended.
The third convention, held in London in 1912 allocated the first radio callsigns for use by aircraft.
ICAN remained in operation until 1945, when the Provisional International Civil Aviation Organization (PICAO) replaced it.
In 1947 PICAO became ICAO.
The 9th edition of the Convention on International Civil Aviation includes modifications from 1948 up to year 2006. ICAO refers to its current edition of the Convention as the statute, and designates it as ICAO Doc 7300/9.
The Convention has 18 Annexes that are listed by title in the article Convention on International Civil Aviation.
International Civil Aviation Organization member states -
As of November 2011, there are 191 ICAO members, consisting of 190 of the 193 UN members.
(All but Dominica, Liechtenstein, and Tuvalu), plus the Cook Islands.
ICAO CODES
Both ICAO and IATA have their own airport and airline code systems.
ICAO uses 4-letter airport codes, IATA's 3-letter codes.
The ICAO code is based on the region and country of the airport.
— For example Paris Charles de Gaulle Airport has an ICAO code of LFPG, where L indicates Southern Europe, F, France, PG, Paris de Gaulle.
Orly Airport has the code LFPO.
In most of the world, the ICAO and IATA codes are unrelated.
For example, Paris Charles de Gaulle Airport has an IATA code of CDG and Paris Orly, ORY.
ICAO in the World
ICAO has a headquarters and seven regional offices:
* Headquarters – Montréal, Quebec, Canada
* Asia and Pacific (APAC) – Bangkok, Thailand
* Eastern and Southern African (ESAF) – Nairobi, Kenya
* Europe and North Atlantic (EUR/NAT) – Paris, France
* Middle East (MID) – Cairo, Egypt
* North America, Central America and Caribbean (NACC) – Mexico City, Mexico
* South America (SAM) – Lima, Peru
* Western and Central African (WACAF) – Dakar, Sénégal
Source: ICAO / Wikipedia
http://www.icao.int
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