Originally Posted by
sleeper
I very much doubt 2000lbs would come even close to the required 30 minutes of reserve fuel.
Very strange they did not refuel while on the ground after landing. I can't imagine a professional crew just ignoring or forgetting about the fuelstate until the apu dies, so there must be more to it.
On most aircraft the APU feeds out of one tank. Depending on the aircraft you might be able to move fuel around to keep the APU running. Airbuses however are not friendly that way. It's likely there was a lot of fuel onboard when the APU quit, it was just not usable by the APU.