That's what Der Spiegel says ("strong turbulence" thick ice crystals etc..). You imply we (still?) can't know, I assume.
And anyhow I do remember having seen this (recontruction of flight path)
Air France 447 - AFR447 - A detailed meteorological analysis - Satellite and weather data
Last edited by wizele; 6th Mar 2010 at 15:49.
Reason: link added