but, of course, none of this has been confirmed. nbc s tom costello has been covering every angle of this story, joins us now. okay, tom, let s talk about the manual controls, that the flight path was made using that. how does that work? take us inside something like that. all right, sources are confirming to us, to nbc news, that whoever was flying the plane used the onboard computer systems to help make the turn, the u-turn back, and to bank right up the straight of mallika. that made it a very smooth turn. and that s what you would expect from a professional pilot, who has intimate knowledge of how the some works. if somebody had, in fact, been manually turning this plane, it would have been very difficult to maintain a steady altitude, and we re told this plane was very much on a steady altitude. so, we still cannot necessarily say that this was done for any, you know, nefarious reason. there could be legitimate reasons that this plane turned around. that the cockpit crew decided