The airplane has three hydraulic systems: A, B and standby. The standby system is used if system A and/or B pressure is lost. The hydraulic systems
power the following airplane systems:
Hydraulic System SGR
  • Wheel brakes
  • Nose wheel steering
  • Flight controls
  • Leading edge flaps and slats
Either A or B hydraulic system can power all primary flight controls with no decrease in airplane controllability.
  • Trailing edge flaps
  • Landing gear
  • Thrust reversers
  • Autopilots.