it's not as easy as people think. The plane could be a wreck.Taking many forms. from a burn hole, a near complete plane, or white dots spread over a large area. The human eye is much much better at this than a computer.What a pointless exercise.
A computer should be able to do that task in a matter of seconds.
I assume they have taken recent satalite images. I do agree however that he is likely dead, if nothings been activated.