This is more academic; I've spent some time looking at the A350 Hydraulic system. WIP
Ailerons now droop when no hydraulic pressure or EHS is available
Each System now connects to its relevant flight control surface, and hydraulic actuators now connect and disconnect correctly depending on the power source. Each of the 14 spoilers is connected to a hydraulic source and a hydrostatic actuator
- Anti-skid, nose wheel steering, and Normal/Alternate brake system are now functional; alternate brakes provide a lower braking pressure, resulting in a longer stopping distance.
Alternate/Direct law now displays (work in progress)
Like the real aircraft, you can still fly with no hydraulic fluid, but if you drop to emergency power, you only have the left side elevator and rudder.
With full electric power available, you have the outer Ailerons providing roll control via the Electrohydrostatic (EHS)