I fly the thing, and NOW Im confused
Let me look into it and I will get back to you. But a word of advise, don't get to caught up in it all, basically you turn it on and things happen, if they dont you go to the QRH, and if that does not work, well..................?
Regarding the scavange pump it only starts to operate when the number one main tank is half full and the tank one forward pump is operating. Once the scvange pump starts to run, you cant stop it for the rest of the flight
