Hello
Our FCOM states that the electric hydraulic pumps should be switched on in sequence 1 - 2, and switched off in sequence 2 - 1, to minimise the transfer of hydraulic fluid between system A and B.
It isn't a problem operationally from what I've heard, but a procedure we utilise to not create an increased workload on the tech staff.
My guess is that there has to be a check valve somewhere in one of the hydraulic systems, but I haven't figured out which one.
Does anyone here know which system?
All inputs are welcome
