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Airbus A320 > Hydraulic System > Flashcards

Hydraulic System Flashcards

1
Q

What is the normal hydraulic system pressure?

A

3000 psi

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2
Q

What is the maximum hydraulic system pressure?

A

3000 +/- 200 psi

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3
Q

Which pumps supply pressure for the green hydraulic system?

A

ENG 1 hydraulic pump and the PTU

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4
Q

What happens to the green hydraulic system if the ENG 1 fire switch is released out?

A

It is pressurized by the PTU

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5
Q

Which pumps supply pressure for the blue hydraulic system?

A

Blue electric pump and the RAT

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6
Q

Which pumps supply pressure for the yellow hydraulic system?

A

ENG 2 hydraulic pump, PTU, and Yellow electric pump

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7
Q

Which items are completely lost with loss of the yellow hydraulic system?

A

No. 2 reverser and alternate brakes

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8
Q

What happens to the yellow hydraulic system if the ENG 2 fire switch is release out?

A

The PTU pressurizes the yellow system

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9
Q

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

A

Green and Blue

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10
Q

When is the PTU inhibited?

A

NW STRNG DISC message displayed and one engine master switch ON

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11
Q

The PTU is automatically activated when there is a ____ psi differential between the _____ and _____ hydraulic systems.

A

500, green, yellow

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12
Q

After cargo door operation, how long is the PTU inhibited?

A

40 seconds

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13
Q

With both ENG MASTER switches OFF and the yellow electric-driven hydraulic pump ON, the PTU will

A

Pressurizes the green hydraulic system.

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14
Q

In flight and ENG 1 or ENG 2 FAULT light, in addition to PTU FAULT light, is an indication of a hydraulic _______
problem.

A

Reservoir

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15
Q

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

A

Priority valves

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16
Q

The RAT pressurizes the blue hydraulic system to ____________psi

A

2500 psi

17
Q

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

A

Blue

18
Q

When will the RAT automatically extend?

A

Loss of AC busses 1 and 2 above 100 knots

19
Q

What would cause the ENG PUMP FAULT light to remain illuminated even after turning the ENG PUMP switch OFF?

A

Reservoir overheat condition.

20
Q

The cargo doors are normally operated by which pump?

A

Yellow electric pump

21
Q

Which hydraulic systems have electric pumps?

A

Blue and Yellow

Airbus A320 (25 decks)

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