http://www.flightglobal.com/articles/20 ... arity.html
http://www.flightglobal.com/airspace/fo ... aspx#77887
http://www.flightglobal.com/airspace/me ... fault.aspx
http://www.flightglobal.com/blogs/fligh ... r-201.html
[youtube]http://www.youtube.com/watch?v=0J4fnS1o_7k[/youtube]