Operation Manual Part 2

Aerosoft – Digital Aviation
CRJ-70 & CRJ-900
AOM PART 2
Systems Description
VOL
5
5-1-75
26-Jul-2017
The following table shows which aircraft system is supplied by which hydraulic system.
System 1
System 3
System 2
Engine driven
pump (1A)
AC motor
pump (1B)
AC motor
pump (3A)
AC motor
pump (3B)
Engine driven
pump (2A)
AC motor
pump (2B)
Rudder
Rudder
Rudder
Left and right elevator
Left and right elevators
Left and right elevator
Left aileron
Left and right aileron
Right aileron
Left and right outboard spoilerons
Main and nose landing gear
Left and right MLG and NLG assist
actuators
Left and right outboard spoilers
Left and right inboard brakes
Left and right outboard brakes
Left and right outboard ground
spoilers
Left and right inboard ground
spoilers
Left and right inboard spoilerons
Left thrust reversers
Nosewheel steering
Left and right inboard spoilers
Right thrust reversers
Further information on valve positions, pressures and hydraulic fluid quantities may be obtained on the
Hydraulic (HYD) EICAS Synoptic page.
Hydraulic systems 1 & 2: