The Standby System has been manually or
automatically activated. The standby pump provides
pressure and standby hydraulic fluid pressure operates
the Standby Yaw Damper, Standby Rudder PCU (Power
Control Unit), the Number 2 Thrust Reverser and acts as
a backup to Number 1 Thrust Reverser and the Rudder.
automatically activated. The standby pump provides
pressure and standby hydraulic fluid pressure operates
the Standby Yaw Damper, Standby Rudder PCU (Power
Control Unit), the Number 2 Thrust Reverser and acts as
a backup to Number 1 Thrust Reverser and the Rudder.
Hydraulic System SGR
| Select |
| or |
The low pressure
sensor sends a
signal to open
the PTU Control
Valve.
sensor sends a
signal to open
the PTU Control
Valve.
Remember that either A or B hydraulic system can power all
primary flight controls with no decrease in airplane controllability.
primary flight controls with no decrease in airplane controllability.