International Civil Aviation Day was established in 1994 by ICAO, through Assembly Resolution A29-1, to mark the 50th anniversary of the Organization, created on 7 December 1944. In 1996, pursuant to an ICAO initiative and with the assistance of the Canadian Government, the United Nations General Assembly by resolution officially recognized 7 December as International Civil Aviation Day and listed it as an official UN day. The purpose of the global celebration is to generate and reinforce worldwide awareness of the importance of international civil aviation in the social and economic development of States, and of the role of ICAO in promoting the safety, efficiency and regularity of international air transport.

2006 International Civil Aviation Day focuses on aviation safety and security to preserve growing benefits of air transport.........

Source:http://www.icao.int/....i možda još ovo......
           http://www.icao.int/cgi/goto_m.pl?icao/en/nr/2006/pio200615_e.pdf