@aeropierre
The time of the accident, the weather, the local press report, the rescue helicopters returning to base because of thick fog and the fact that I have flown in this area and know that the weather can change very rapidly, all this leads me to conclude that low visibility is the root case. Call it speculation if you like but I am certainly not trying to start a rumor. The survivor, to whom I wish a swift recovery, and maybe a cockpit camera will tell us.