>>n fact, if you draw the line from the receiver to the 8:11 position on the arc, it is strong evidence that the flight ended somewhere along the border between Pakistan and Afghanistan.<<
There is no apparent reason to draw a line from the satellite’s position toward Pakistan. There is, in fact, no 8:12 position on the arc. The entire southern and northern arcs describe the approximate location of the plane as being somewhere along those arcs. Nothing on the picture justifies assuming the plane is any closer to Pakistan than to the South Indian Ocean.
I meant to say there is no single 8:11 position on the arc, not 8:12.