hamster3null,
At 14000..14500 lbs/hr, not only is that not enough fuel for 800 km beyond the last ping, but seems barely enough just to get _to_ the last ping.
What Flight level is your fuel burn based on. Reports are coming out now that the aircraft dropped to 12000' or lower after its turn back. Surely this would reduce the distance covered and make this current search area way too far away now. Also making the 40 degree SAT IOR range ring handshakes much closer to the equator than previously thought.