Whilst not disagreeing with your speculation, the plane would have to have landed somewhere without a mobile phone mast anywhere near surely, otherwise I'm sure someone would have made a phone call, could the perpetrators have managed to seize all the mobile phones?
Bloody great airplanes don't just disappear, this is getting more bizarre by the day. I had a 10 hour flight on a 777 yesterday.... And yes I was very nervous all the way :smile:
The Air France flight was in severe turbulence wasn't it and it transpired that it was pilot error in panicking when warning lights flashed up??
EDIT Just googled it
http://www.ibtimes.co.uk/missing-malaysia-airlines-flight-mh370-crash-air-france-flight-447-that-killed-all-board-1439572