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Mesa CRJ-900 > Hydraulics > Flashcards

Flashcards in Hydraulics Deck (49)
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2

Left thrust reverser is controlled by which Hydraulic system?

#1

3

Right thrust reverser is controlled by which Hydraulic system?

#2

4

Outboard brakes are controlled by which Hydraulic system?

#2

5

How many PSI are the hydraulic systems?

3000 psi

6

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

7

Which pump is automatically powered by the ADG bus?

3B

8

Which pump operates continuously with the switch on?(No auto mode)

3A

9

Which system operates Inboard brakes?

3

10

Which system operates Nose wheel Steering?

3

11

Which system operates the Landing Gear?

3

12

Where is the service door for the HYD 3 system?

Right side behind the wing  

13

What powers the Hyd 3 system?

Electric  

14

Which pumps are considered "Full Time Pumps?"

"A" pumps

15

Which pumps are considered "Part Time" pumps?

"B" pumps

16

When will low pressure caution appear on the EICAS?

1800 psi

17

When will you get a high temperature caution on the EICAS?

96c

18

What is considered high pressure?

3200 psi

19

When will a pressure relief valve engage?

3750 psi

20

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)

21

What is the function of the Hydraulic Accumulators?

Dampens pressure surges

22

What are the Hydraulic Accumulators charged with?

Dry Nitrogen

23

What is the function of these HYD SOV switches?

Isolates hydraulic fluid to respective EDP(Engine Driven Pump)

24

Which Hydraulic System(s) get serviced from the AFT Equipment Bay?

Systems 1 and 2

25

Does Pump 3B automatically start when the ADG is deployed?

Yes

26

With the switch in the AUTO position, will pump 3B be operating during normal takeoffs and landings?

Yes

27

Which ACMP is directly powered by the ADG?

3B

28

Will pumps 1B and 2B automatically turn on during an engine failure?

No, they must have the switches placed into the ON position 

29

Which Hydraulic systems are cooled with an air/oil heat exchanger?

Systems 1 and 2

30

What is the Normal percentage of Hydraulic fluid in the system?

45 to 85%

31

Where would you normally be able to read hydraulic brake pressure?

Hydraulic synoptic page