Originally Posted by
bigduke6
I believe there is also logic to give you the tank-to-engine message on the ground prior to engine start with tanks 2 or 3 containing up to 500 kg more than tanks 1 or 2.
Originally Posted by
NSEU
Interesting. I can't find any reference to it in the wiring schematics.
Hmmm...maybe the pilots have more system info than the maintenance guys after all. Or maybe just a system update and you have older info.
Straight from the QRH.....
>FUEL TANK/ENG
Condition: One of these occurs with crossfeed valve 1 or 4 open:
•Main tank 2 quantity is equal to or less than main tank 1 quantity, or main tank 3 quantity is equal to or less than main tank 4 quantity
•On the ground after refueling, after initial electrical power established, or after CMC ground test; main tank 2 quantity less than or equal to main tank 1 quantity plus 500 kgs and main tank 3 quantity less than or equal to main tank 4 quantity plus 500 kgs