*Hydraulics-Hydraulic Panel

Question 1

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

Answer 1

No, you must have at least one.

Question 2

What occurs when you press the RAT MAN ON pb?

Answer 2

The RAT extends providing pressure to the BLUE hydraulic system.

Question 3

Does the PTU transfer hydraulic fluid?

Answer 3

No

Question 4

How many hydraulic pumps are in the GREEN system?

Answer 4

1 Engine
1 PTU

Question 5

How many hydraulic pumps are in the Blue system?

Answer 5

1 Electric
1 RAT

Question 6

How many hydraulic pumps are in the YELLOW system?

Answer 6

1 Engine
1 Electric
1 PTU
1 Hand Pump

Question 7

When does the BLUE ELEC PUMP operate?

Answer 7

-After the first engine is started.
-If the BLUE PUMP OVRD pb on the MAINTENANCE panel has been pressed with no engine running.

Question 8

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

Answer 8

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

Question 9

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

Answer 9

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

Question 10

When doses the PTU operate with the pb in AUTO?

2

Answer 10

-With a difference of 500 psi between GREEN and YELLOW pressure.
-Self test after second engine start.

Question 11

When is the PTU inhibited?

5

Answer 11

-PTU pb OFF
-During First Engine Start
-Parking brake is ON and only one ENG MASTER switch ON.
-NWS in towing position and parking brake ON.
-Cargo door operation.

Question 12

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

Answer 12

Yes, when the overheat subside.

Question 13

Can the YELLOW ELEC PUMP run the PTU?

Answer 13

Yes, which will then pressurize the Green Hydraulic System.

Question 14

Name some items that run from the GREEN system on the A-320.

Answer 14

-Landing gear
-Normal brakes
-Slats and Flaps
-#1 Thrust Reverser

Question 15

Name some items on the YELLOW system?

Answer 15

-Alternate brakes
-Parking brakes
-Cargo doors
-#2 Thrust reverser
-NWS

Question 16

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

Answer 16

P-pump pressure low
O-Over-temp in reservoir
L-Low air pressure in the reservoir
L-Low quantity in the reservoir

Question 17

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

Answer 17

P-pump pressure low
O-Over-temp in reservoir
L-Low air pressure in the reservoir
L-Low quantity in the reservoir
O-Overheat of pump

Question 18

What is the purpose of the hand pump?

Answer 18

To provide Yellow hydraulic pressure for cargo door operation.

Question 19

If the FAULT light in the PTU pushbutton is on, is there any other indication?

Answer 19

Yes, the FAULT light on the respective ENG PUMP pushbutton will be illuminated.

Question 20

What are some items powered by the BLUE system?

Answer 20

Slats
Emergency power generator

Question 21

What does an amber FAULT light in the PTU pushbutton indicate (OLL)?

Answer 21

Green or Yellow System
O-Overtemp in reservoir
L-Low air pressure in the reservoir
L-Low quantity in the reservoir.

Question 22

What is the function of the hydraulic priority valves?

Answer 22

Hydraulic power to the flaps, slats landing gear, and emergency generator is cut off if pressure drops below a predetermined value (high demand items).

Question 23

What is normal hydraulic system pressure?

Answer 23

3000 PSI +/- 200