Left thrust reverser is controlled by which Hydraulic system?
Right thrust reverser is controlled by which Hydraulic system?
Outboard brakes are controlled by which Hydraulic system?
How many PSI are the hydraulic systems?
When will Pumps 1B, 2B, and 3B automatically start?
pumps will operate when their respective buses arepowered, any generator operating and flaps out of zero
Which pump is automatically powered by the ADG bus?
Which pump operates continuously with the switch on?(No auto mode)
Which system operates Inboard brakes?
Which system operates Nose wheel Steering?
Which system operates the Landing Gear?
Where is the service door for the HYD 3 system?
Right side behind the wing
What powers the Hyd 3 system?
Which pumps are considered "Full Time Pumps?"
Which pumps are considered "Part Time" pumps?
When will low pressure caution appear on the EICAS?
When will you get a high temperature caution on the EICAS?
What is considered high pressure?
When will a pressure relief valve engage?
How many Hydraulic System Accumulators on the CRJ?
Total of 5 * One for each Hydraulic system (1,2,3) * One for each brake system (2)
What is the function of the Hydraulic Accumulators?
Dampens pressure surges
What are the Hydraulic Accumulators charged with?
What is the function of these HYD SOV switches?
Isolates hydraulic fluid to respective EDP(Engine Driven Pump)
Which Hydraulic System(s) get serviced from the AFT Equipment Bay?
Systems 1 and 2
Does Pump 3B automatically start when the ADG is deployed?
With the switch in the AUTO position, will pump 3B be operating during normal takeoffs and landings?
Which ACMP is directly powered by the ADG?
Will pumps 1B and 2B automatically turn on during an engine failure?
No, they must have the switches placed into the ON position
Which Hydraulic systems are cooled with an air/oil heat exchanger?
Systems 1 and 2
What is the Normal percentage of Hydraulic fluid in the system?
45 to 85%
Where would you normally be able to read hydraulic brake pressure?
Hydraulic synoptic page
Where can the hydraulic system be viewed on EICAS under normal operating conditions?
The EICAS ED2 Hydraulic synoptic page
What activates the hydraulic shutoff valve at the engine firewall?
HYD SOV switch, and ENGINE FIRE PUSH switch
Which Hydraulic pumps are engine driven?
How are hydraulic systems #1 and #2 cooled?
Ram air / oil heat exchanger
System 3 is powered by how many AC motor pumps?
During normal operations, system 1 provides hydraulic pressure to?
* Rudder and Elevator * Left Aileron * Outboard Multifunction spoiler panels * Outboard ground spoilers Left Thrust Reverser
During normal operations, system 2 provides hydraulic pressure to?
* Rudder and Elevator * Right Aileron * Inboard multifunction spoiler panels * Main Landing Gear Auxiliary Actuators * Landing Gear Alternate Extension Right Reverser Outboard Brakes
With normal switch positions, which electric hydraulic pump normally operates continuously?
System 3 provides hydraulic pressure to?
* Rudder and elevators * Left and right aileron * Inboard ground spoilers * Landing gear Nosewheel steering Inboard brakes
How many hydraulic systems are normally used to power the rudder?
The CRJ has how many hydraulic pumps?
Your at the gate with only the APU running. Which hydraulic pumps can operatate?
All the electric pumps
You are taxiing out single engine (right engine running). Which hydraulic pumps are running in normal operations(flaps up)?
3A and 2A
With the No.1 engine shutdown in flight, which hydraulic pumps are not available?
The A pumps are engine-driven, and the B pumps are electric AC motor pumps?
False, pump 3A is an AC electric pump
What is considered low hydraulic pressure?
What is considered high hydraulic pressure?
What hydraulic system(s) power the inboard Ground Spoilers?
What Hydraulic system(s) power the Left Aileron?
#1 and #3