Originally Posted by
Fursty Ferret
In this case by opening the fuel cross feed we're treating left and right wing tanks as one single tank. Makes no difference at that point which pumps have the higher pressure or if fuel moves between tanks.
Considering the scenario where the live side has the highest delivery pressure ,you wouldn’t want to have the « dry side » in the live side. If « fuel pumps OFF » in the live side is an issue ,
Approaching fuel starvation you will get an ECAM
FUEL L (R) TK PUMP 1 + 2 LO PR prompting you to switch OFF the fuel pumps from the starved side anyway.
And then how will the transition occur ? No one can garanty a smooth feeding transition from the dead side with the opposite being dry