I'm not uncomfortable at all about posting the theory, because if it's true, it should point to an unbelievable human factors black hole in the design of this fuel system. Who would design a system where your job is to switch a fuel pump off when the fuel runs low, and in doing so, you create a variable unusable fuel amount whose impact depends on the flight regime and your subsequent manipulation of the fuel pumps.
Reminds me of the electrics in the 109, where for certain electrical emergencies you have to switch the battery OFF.
However I'm only struck by the coincidence of the fuel remaining amount. I still can't explain why someone would be able to overlook the cacophony of warnings including the gongs that RVDT pointed out.
Last edited by puntosaurus; 10th Dec 2013 at 11:51.