*Hydraulics-Hydraulic Panel Flashcards
Can the aircraft be flown with a loss of all hydraulic systems?
No, you must have at least one.
What occurs when you press the RAT MAN ON pb?
The RAT extends providing pressure to the BLUE hydraulic system.
Does the PTU transfer hydraulic fluid?
No
How many hydraulic pumps are in the GREEN system?
1 Engine
1 PTU
How many hydraulic pumps are in the Blue system?
1 Electric
1 RAT
How many hydraulic pumps are in the YELLOW system?
1 Engine
1 Electric
1 PTU
1 Hand Pump
When does the BLUE ELEC PUMP operate?
-After the first engine is started.
-If the BLUE PUMP OVRD pb on the MAINTENANCE panel has been pressed with no engine running.
Does the RAT automatically deploy with the loss of BLUE pressure?
No, it must be deployed manually by the RAT MAN ON pb.
If the ACCU PRESS indicator is low, what should you do?
Obtain ground clearance, then turn ON the YELLOW ELEC PUMP to pressurize the accumulator.
When doses the PTU operate with the pb in AUTO?
2
-With a difference of 500 psi between GREEN and YELLOW pressure.
-Self test after second engine start.
When is the PTU inhibited?
5
-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.
If the ECAM actions lead you to turn OFF the PTU for a Reservoir Overheat, will the FAULT light go out?
Yes, when the overheat subside.
Can the YELLOW ELEC PUMP run the PTU?
Yes, which will then pressurize the Green Hydraulic System.
Name some items that run from the GREEN system on the A-320.
-Landing gear
-Normal brakes
-Slats and Flaps
-#1 Thrust Reverser
Name some items on the YELLOW system?
-Alternate brakes
-Parking brakes
-Cargo doors
-#2 Thrust reverser
-NWS
What does an amber FAULT light in the ENG PUMP pb indicate?
P-pump pressure low
O-Over-temp in reservoir
L-Low air pressure in the reservoir
L-Low quantity in the reservoir
What does an amber FAULT light in the BLUE or YELLOW ELEC PUMP pb indicate? (POLLO)
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
What is the purpose of the hand pump?
To provide Yellow hydraulic pressure for cargo door operation.
If the FAULT light in the PTU pushbutton is on, is there any other indication?
Yes, the FAULT light on the respective ENG PUMP pushbutton will be illuminated.
What are some items powered by the BLUE system?
Slats
Emergency power generator
What does an amber FAULT light in the PTU pushbutton indicate (OLL)?
Green or Yellow System
O-Overtemp in reservoir
L-Low air pressure in the reservoir
L-Low quantity in the reservoir.
What is the function of the hydraulic priority valves?
Hydraulic power to the flaps, slats landing gear, and emergency generator is cut off if pressure drops below a predetermined value (high demand items).
What is normal hydraulic system pressure?
3000 PSI +/- 200
