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A320 SKV > Hydraulic System > Flashcards

Flashcards in Hydraulic System Deck (20)
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1

What is the Normal hydraulic system pressure

3000 PSI

2

What is the maximum hydraulic system pressure

3000 +- 200 PSI

3

When is the blue hydraulic system pressurized

Automatic with the first engine start

4

What is the status of the yellow hydraulic system in the graphic below

The ENG PUMP switch is ON and the output pressure is low

5

IF the ENG 2 FIRE switch is released out

The PTU pressurizes the yellow system

6

Which hydraulic system pumps are running after the #1 engine start

Green and Blue

7

When is the PTU inhibited

NW STRG DISC message displayed and one engine master switch ON

8

What is the purpose of the PTU

Enables the green system to pressurize the yellow system and vice versa

9

The PTU is automatically activated when there is a _____ PSI differential between the _____ and _____ hydraulic systems

500, green, yellow

10

After cargo door operation, how long is the PTU inhibited

40 seconds

11

What does the amber PTU indication mean

The PTU is switched off

12

In flight a PTU FAULT light, in addition to an ENG 1 or ENG 2 FAULT light, could indicate a

Yellow hydraulic reservoir low fluid level

13

In flight, in addition to the PTU FAULT light, what other FAULT light will illuminate for a green or yellow system reservoir problem

ENG 1 or 2 PUMP FAULT light

14

Which device shuts off hydraulic power to the heavy users if system pressure drops below a predetermined value

Priority Valves

15

The RAT pressurizes the blue hydraulic system to

2500 PSI

16

The RAT can be deployed as an emergency means of pressurizing the _____ hydraulic system

Blue

17

When will the RAT automatically extend

Loss of AC busses 1 and 2 above 100 knots

18

The cargo doors are normally operated by the

Yellow electric pump

19

Which hydraulic systems have electric pumps

Blue and yellow

20

What does the RAT MAN ON switch Do

Extends the RAT and pressurizes the blue system