Malaysia Airlines and ATC lost contact with flight 370 which is a B772 with 239 people on board. It has most likely crashed as by now it would have been out of fuel and there are no reports of the plane at any airport. Last signal was at FL350.
http://www.cnn.com/2014/03/07/world/asia/malaysia-airlines-plane-missing/index.html?hpt=hp_t1
http://www.cnn.com/2014/03/07/world/asia/malaysia-airlines-plane-missing/index.html?hpt=hp_t1