up toward beijing and can see on this a yellow dotted line which is the initial and traditional flight path of a plane going to beijing. at 1:19, the co-pilot made a very routine check-in with air traffic control basically around here and said everything is fine, good night. after that, two minutes after that they turned off the transponder, piece of equipment that tells the ground where it is and some time in that same period they turned off the acar system and they turned off the acar system which also sends data back to the base and they also reprogrammed the flight control so the flight management system to tell it to go to the different way point which is a turn to the left. he makes his radar report. the transponder goes off and the plane makes unscheduled turn to the left and they lose radar