Originally Posted by
MrPeabody
The APU will then attempt an auto-start with whatever fuel is left in the APU fuel manifold and left fuel tank. If the APU were to start (it wouldn't be for long); the buses would come on line again and SATCOM would power up and attempt to reacquire the satellite.
I believe this is the main circumstantial evidence for believing the aircraft was out of fuel at that time, and should be somewhere near that location. Which seems to be consistent with the current search area.