About ICAO
The International Civil Aviation Organization (ICAO) is a UN specialized agency, established by States in 1944 to manage the administration and governance of the Convention on International Civil Aviation (Chicago Convention).
2014 – 2016 Global Aviation Safety Plan
http://www.icao.int/publications/Pages/Publication.aspx?docnum=10004
Safety Reports for multiple years
http://www.icao.int/safety/Pages/Safety-Report.aspx