this was the plane s last known location over the south china sea, but now a twist. a senior malaysian air force official telling cnn their radar shows the boeing 777 may still have been airborne more than an hour later flying in the opposite direction of its destination, beijing. the same air force official says it was just over the small island of palau parac. now challenges to that. they re saying it s too early to issue any confirmations about the plane s actual flight path. adding to the mystery, the plane s trans ponder, the instrument that transmits its speed, direction stopped working or was turned off while cruising at 35,000 feet raising the possibility of a hijacking or a catastrophic incident. you have to have a very deliberative process to turn the trans ponder off.