28. HYD Panel Flashcards

1
Q

Can the aircraft be flown with a loss of all hydraulic systems?

A

No – you must have at least one

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2
Q

What occurs when you press the RAT MAN ON pb?

A

The RAT extends providing pressure to the BLUE hydraulic system.

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3
Q

Does the PTU transfer hydraulic fluid?

A

No

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4
Q

How many hydraulic pumps are in the GREEN system?

A

o 1 Engine

o 1 PTU

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5
Q

How many hydraulic pumps are in the BLUE system?

A

o 1 Electric

o 1 RAT

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6
Q

How many hydraulic pumps are in the YELLOW system?

A

o 1 Engine
o 1 Electric
o 1 PTU
o 1 Hand pump

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7
Q

When does the BLUE ELEC PUMP operate?

A

o After the first engine is started

o If the BLUE PUMP OVRD pb on the MAINTENANCE panel has been pressed with no engine running

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8
Q

What is normal system hydraulic pressure?

A

3000 PSI

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9
Q

Does the RAT automatically deploy with the loss of BLUE pressure?

A

No, it must be deployed manually by the RAT MAN ON pb.

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10
Q

If the ACCU PRESS indicator is low, what should you do?

A

Obtain ground clearance, then turn ON the YELLOW ELEC PUMP to pressurize the accumulator.

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11
Q

When does the PTU operate with pb in AUTO?

A

o With a difference of 500 PSI between GREEN and YELLOW pressure
o Self‐test between first and second engine start

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12
Q

When is the PTU inhibited?

A

o PTU pb OFF
o First Engine start
o Parking brake is ON and only one ENG MASTER switch is ON
o NWS in towing position and parking brake ON
o Cargo door operation

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13
Q

What does a FAULT indication in the PTU pb mean?

A

Green or Yellow system:
 Reservoir Fluid Low Level
 Reservoir Overheat
 Reservoir Low Air Pressure

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14
Q

If the ECAM actions lead you to turn OFF the PTU for a Reservoir Overheat, will the FAULT light go out

A

When the overheat condition no longer exists

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15
Q

Can the YELLOW ELEC PUMP run the PTU?

A

Yes, which will then pressurize the Green hydraulic system.

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16
Q

Name some items that run from the GREEN system on the A‐320 (N246NV).

A

o Landing gear
o Normal Brakes
o Slats and flaps
o #1 Thrust reverser

17
Q

Name some items that run from only the YELLOW system on the A‐320 (N246NV).

A
o Alternate Brakes
o Parking Brake
o NWS
o Cargo doors
o #2 Thrust reverser
18
Q

What does an amber FAULT light in the ENG PUMP pb indicate (POLL)?

A

o P – Pump pressure low
o O – Over‐temp in reservoir
o L – Low air pressure in the reservoir
o L – Low quantity in the reservoir

19
Q

What does a FAULT light in the BLUE or YELLOW ELEC PUMP pb indicate (POLLO)?

A
o P – Pump pressure low
o O – Over‐temp in reservoir
o L – Low air pressure in the reservoir
o L – Low quantity in the reservoir
o O – Overheat of Pump
20
Q

What is the purpose of the hand pump?

A

o To provide Yellow hydraulic pressure for cargo door operation