`Collector Tank
The riddle here is what can cause both engines to fail, maybe simultaneously, and is considered a fuel starvation when in fact there was plenty of fuel in the tanks? I believe the answer would point to the collector tank. Small in capacity but is essential to enable the fuel to be delivered to each power-plant from any of the 4 other tanks, wings/fuselage or aux, and tail tank (which was already empty as it would normally be.