whether it was a horizontal surveillance radar. if it had a sudden dissent, you know, it would appear as long as it was within the beam of the radar. once it fell below that then they couldn t track it any longer as it hit the water. we know the pilot asked for a change of course but didn t send a distressed signal or a may day call given that he was presumably trying to savage the flight. does it have much significance or provide any clues what what happened? it will provide some clues. the first would think it was something unexpected that happened to the airplane. the didn t have time to make a call. the button for the transmit is right on the yolk of the airplane are on the control stick, it s a airbus slide by wire. he could have easily made the call. so it could be a clue but it s really early, earl to speculate. one way or the other on the