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
What are the sources of pressure in the GREEN system?
- Engine 1 hydraulic pump
* 1 PTU
How many hydraulic pumps are in the BLUE system?
- 1 Electric
* 1 RAT
How many hydraulic pumps are in the YELLOW system?
- Engine 2 hydraulic pump
- 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 and AC power applied
What is normal system hydraulic pressure?
3000 PSI
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 does the PTU operate with pb in AUTO?
- With a difference of 500 PSI between GREEN and YELLOW pressure
- After first engine start until second engine is started
When is the PTU inhibited?
- On the ground if all of the following conditions are met:
- PTU pb OFF
- One ENG MASTER SW ON and the other OFF
- Parking brake is ON and only one ENG MASTER switch is ON
- NWS in towing position or parking brake ON
- PTU is also inhibited during Cargo door operation
If the ECAM actions lead you to turn OFF the PTU for a Reservoir Overheat, will the FAULT light go out?
No, not until the overheat subsides
If the FAULT light in the PTU pb is ON, are there any other indications on the HYD Panel?
Yes – also a FAULT light illuminated in the respective ENG PUMP pb
Can the YELLOW ELEC PUMP run the PTU?
Yes, which will then pressurize the Green hydraulic system
Does operating the cargo door run the PTU?
No, it is inhibited
Name several items that run from only the GREEN system?
- Slats and Flaps
- Landing gear
- Normal Brakes
- # 1 Thrust Reverser
- Rudder
- THS
Name several items that run from only the YELLOW system?
- Flaps
- Nosewheel Steering
- Alternate Brakes
- Parking Brake
- # 2 Thrust Reverser
- Cargo doors
What does an amber FAULT light in the PTU pb indicate (OLL)?
- Overtemp in reservoir
- Low air pressure in the reservoir
- Low quantity in the reservoir
What does an amber FAULT light in the ENG PUMP pb indicate (POLL)?
- Pump pressure low
- Overtemp in reservoir
- Low air pressure in the reservoir
- Low quantity in the reservoir
What does a FAULT light in the BLUE or YELLOW ELEC PUMP pb indicate (POLLO)?
- Pump pressure low
- Overtemp in reservoir
- Low air pressure in the reservoir
- Low quantity in the reservoir
- Pump Overheat
Where are the HYD FIRE SHUTOFF VALVES located?
Between the reservoirs and the ENG pumps
What is the function of the hydraulic priority valves?
Hydraulic power to the flaps, slats, landing gear, NW steering, and emergency generator is cut off if pressure
drops below a predetermined value
What is the purpose of the hand pump?
To provide Yellow hydraulic pressure for cargo door operation
If AC power is available, the blue electric pump operates when?
- In flight
- On the ground, if one engine is running or if the crew has pressed the BLUE PUMP OVRD pushbutton on the maintenance panel.
