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Fly By Wire
Electrical signals from the sidestick travel through flight control computers before being passed to the flight control surface hydraulic actuators (servo controls), which are controlled through the hydraulic systems.
Each primary flight control surface is controlled by different hydraulic sources:
- 2 for ailerons, elevators, stabiliser
- 3 for rudder
There is an independent actuator for each hydraulic source. Each actuator is controlled by a different computer.
Each spoiler has a single actuator supplied by one of the hydraulic sources.