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Worksheetstest 29 87C
Total questions: 90
Worksheet time: 45mins
Fire shut-off valve are installed for:
Blue system and Green system.
Yellow system and Blue system.
Green system and Yellow system.
The engine-pump fire valve is installed in the wing between the rear spar and the rear false spar, inboard of the pylon. It is in
The suction line between the reservoir and the engine-driven pump
The pressure line between engine-driven pump and the manifold
The suction line between the reservoir and the electric pump
The hydraulic priority valve
Makes sure that all available hydraulic pressure is sent to the primary flight controls if pressure in the system is reduced.
Makes sure that the secondary flight control are supplied by hydraulic pressure if pressure in the system is reduced.
Makes sure that all available hydraulic pressure is sent to landing gear system if pressure in the system is reduced.
The aircraft is supplied with AC power, if the cargo compartment doors are set to open or close on the ground:
The blue electric pump starts automatically.
The yellow electric pump starts automatically.
The yellow electric pump starts automatically and the green system also pressurized.
When is engine fire Shut Off valve of a hydraulic system closed?
Automatically when the engine is shut down
If the ENGINE FIRE pushbutton is released out.
Automatically as soon as engine fire is detected
Reservoir OVHT indication appears amber on ECAM. The signal comes from the temperature sensor installed on:
The return filter
The high pressure manifold
The pump out let line
Regarding hydraulic system, which statement is NOT correct?
It is not possible to pressurize each main system with one or more of the auxiliary systems without main pumps.
Blue electric pump operates when any one of the two engines starts
In the normal configuration, three main systems automatically supply hydraulic power when the engines operate.
The Ram Air Turbine (RAT) is deployed if:
By using the guarded P/B.
All AC electrical power sources are lost at speeds greater than 100 kts, or manually by using the guarded P/Bs.
All hydraulic power sources are lost at speeds greater than 100 kts, or manually by using the guarded P/Bs.
When you push the fire panels:
The green fire valve closes.
The green fire valve and the yellow fire valve closes.
The green fire valve, the yellow fire valve and blue fire valve closes.
A reservoir quantity indicator allows refilling monitoring. It shows the contents of the selected hydraulic reservoir that is indicated by:
the three colored lights.
one of the three colored light.
one of the three colored lights.
If there is no electrical power available:
the fluid level can be checked by push BAT ON.
the fluid level can be checked on the reservoir itself.
the fluid level can’t be checked.
When the PTU operation is inhibited?
In case of cargo door operations with the yellow electric pump or first engine start.
Only if an engine failure has been detected.
Never, it cannot be inhibited.
What are the manual depressurization valves provided for?
Depressurization of related hydraulic circuit
Hydraulic system depressurization
None of above
With both engines stop, is it possible to pressurized only Green system for maintenance
Yes, with yellow electric pump and the PTU
Yes, with blue electric pump and the PTU
None of above
The hydraulic PTU will activate if:
A. A significant pressure loss (500 Psi) occurs in any of the three hydraulic systems.
B. A significant pressure loss (500 Psi) occurs in the Green or Yellow hydraulic system.
C. Both are correct.
After extending the RAT, is it possible to check its position and status?
A. Yes, select the ECAM ELEC page.
B. Yes, select the ECAM HYD page.
C. No. It is not possible.
When will normal operation of the Blue system hydraulic pump begin?
A. During the first engine start.
B. When the first engine MASTER switch is moved to the ON position.
C. After both engines are started.
For hydraulic system malfunctions, when will the RAT deploy?
A. Automatically with the failure of both the Green and Blue hydraulic systems.
B. Automatically with the failure of both the Green and Yellow hydraulic systems.
C. When the guarded RAT MAN ON push button is selected by the crew.
During A/C push back, only one engine running:
A. the PTU operation is operative
B. the PTU operation is inhibited
C. the PTU operation is depending on PTU p/b switch
For normal supply, all three reservoirs are pressurized from:
A. Engine 1.
A. Engine 2.
C. APU.
The green reservoir is located in:
A. The main landing gear bay
B. The nose landing gear bay
C. The green hydraulic compartment
All the reservoirs are filled from:
A. The green ground service panel
B. Separated service panel
C. The blue ground service panel
Rat is retracted by:
spring force.
solenoid operation.
blue hydraulic pressure.
Filling hydraulic with fluid:
to the middle of the scale.
to the upper end of the scale.
to the special value of (blue, green, yellow) hydraulic system.
A hand pump is provided in:
The yellow system for landing gear door manual operation.
The yellow system for cargo door manual operation.
The yellow system for PTU operation.
The identification of the pipe as a hydraulic pipe, its function with:
Black round, the direction of the fluid flow and a color code.
Black dots, the direction of the fluid flow and a color code.
Black round, the direction of the fluid flow and a black code.
The threshold of the hydraulic pressure relief valve is:
237 bar.
245 bar.
Which is the first priority of the pressure source for reservoir pressurization:
The engine 1 HP compressor.
The engine 2 HP compressor.
The pneumatic system or ground supply.
On the blue hydraulic system, the Constant Speed Motor/Generator (CSM/G) is used:
To provide A/C electrical power in case of emergency.
To provide hydraulic power in case of emergency.
Both A & B
An identification of a hydraulic system comprising:
A number 1, 2 or 3 respectively indicating the Yellow, Blue, or Green system.
A number 1, 2 or 3 respectively indicating the Blue, Green, or Yellow system.
A number 1, 2 or 3 respectively indicating the Green, Blue, or Yellow system.
The RAT retraction done:
On GND by green hydraulic pressure.
On GND by blue hydraulic pressure
On GND or in the air by blue hydraulic pressure.
Where can you check the hydraulic quantity:
On ECAM and Green service panel.
On ECAM and reservoirs.
A & B
The yellow electric pump runs:
If the ELEC PUMP pushbutton is set to ON
If the cargo door selector is activated.
A or B.
A bidirectional Power Transfer Unit (PTU) enables:
The green hydraulic fluid to flow into the yellow system
The green and yellow hydraulic fluid to power both systems
The green system powered by the yellow system or vice versa, without fluid transfer.
A Ram Air Turbine (RAT) is provided in:
The blue system for emergency use.
The green system for emergency use.
The yellow system for emergency use.
A fire shut-off valve is positioned:
Downstream of the engine driven pump
Upstream of the engine driven pump
On the engine driven pump
In flight, if the blue electric pump fails the blue system:
Is lost.
Can be recovered by the RAT.
Can be recovered by the PTU.
During first engine start the PTU is:
Automatically running.
Tested.
None of above.
How can the LH wing be supplied independently during the leak measurement test?
By setting the leak measurement valve to OFF.
By using the LH wing spool valve.
Both A and B
Is it possible to extend the Ram Air Turbine in flight?
Yes, if blue pressure is available.
Yes, but for automatically extend only.
None of above
The leak measurement valves are used for?
Stop the leak of hydraulic to minimize the risk of fire.
Stop movement of the high lift devices during maintenance.
None of the above.
With the aircraft on the ground and the blue electric pump switch in auto; the blue pump will be energized when:
One engine is running.
The BLUE PUMP OVRD switch has been pressed.
First two statements are correct.
The aircraft's three hydraulic systems are normally pressurized by:
Two engine driven pumps and one electric pump.
Two electric pumps and one PTU.
Two electric pumps and two engine driven pumps.
When will the yellow system electric pump operate? (AC power is available).
During the engine #2 start.
When the first engine MASTER switch is moved to the ON position.
When the yellow electric system ELEC PUMP push button is selected to ON or the ground crew activates a cargo door switch.
What is the nominal system pressure?
1000 PSI
2000 PSI
3000 PSI
Each hyd. Fluid’s ‘OVHT’ status is monitored by sensor installed in:
Suction line
High pressure line
Return line
The EDP in the de-pressurized mode:
Does not operate
Still operates and supplies reduced pressure to the system
Still operates and does not supply pressure to the system
Is it possible to pressurize only Green system for maintenance with both engines stop and no usage of hydraulic ground cart?
Yes, with yellow electric pump and the PTU.
Yes, with blue electric pump and the PTU.
No
With the BLUE ELEC PUMP pushbutton set to AUTO
The electric pump operates at first engine start.
The pump is de-energized.
The pump operates in case of both EDP failure.
The RAT is automatically extended in case of:
Loss of AC bus1 and bus2 and speed above 100 Knots.
Blue hydraulic pump failure
Can only be extended manually.
During second engine start the PTU is:
Automatically running.
Tested.
Inhibited.
To which system(s) will the Ram Air Turbine provide hydraulic power?
The blue system
The yellow system
The green and yellow systems
What will happen when the Yellow electric pump P/B is set to "ON", with aircraft on ground, electrical power available, PTU selected to "AUTO" and engines not running?
The green and yellow systems are pressurized
The green and blue systems are pressurized
Only the yellow system is pressurized
A Blue system pipeline is identified by:
A blue band and number 1.
A blue band and number 2.
A blue band and number 3.
How can the LH wing be supplied independently during the leak measurement test?
By setting the leak measurement valve to OFF and operating the electric pump.
By pressurizing the yellow system by using the PTU.
By setting the leak measurement valve to OFF and manually open the LH wing spool valve
Which is the correct statement:
In the yellow hydraulic system, the electrical pump operates automatically when one engine is operating
In the yellow system, the electrical pump operates automatically when A/C is in flight configuration
In the yellow system, the electrical pump is manually controlled or automatically operates
In flight, in normal condition, which is the correct statement for the PTU :
In stand-by
Working continuously
Working continuously and there is no transfer of hydraulic fluid from one system to the other
What happens if hydraulic pressure drops?
The priority valves give priority to the heavy loads users.
The priority valves give priority to the essential systems
The priority valves modulate the pressure to the users
When is the engine fire shut off valve closed?
When the engine is shut down
Automatically as soon as an engine fire is detected.
If the engine fire pushbutton is release out.
What can the hand pump be used for?
To pressurized the reservoir.
To check the flight controls
To operate the cargo doors
What are the manual depressurization valves provided for?
Individual reservoir depressurization
Depressurization of related hydraulic circuit
Hydraulic system depressurization
The Green system is powered by:
A. Engine driven pump (EDP)
B. Yellow system via PTU
C. A and B
Hydraulic reservoir is normally pressurized by:
A. Bleed air from ENG 1
B. Bleed air from Pneumatic system
C. By ground card only
Where can we do maintenance with RAT:
A. At Green service panel
B. At Blue service panel
C. At Yellow service panel
What is the purpose of the leak management valves:
To isolate the hydraulically heavy load users in order to maintain normal supply to essential users
To isolate the primary controls
To collect leak from seal drains of some hydraulic components
When is the engine driven pump in the depressurized mode?
When the ENG PUMP pushbutton is set to OFF
The engine pump cannot be depressurized as long as the engine is running
The engine pump is automatically depressurized if the output pressure drops below 1450psi
What happens if hydraulic pressure drops?
The priority valves cut off power to the heavy loads users.
The priority valves give priority to the essential systems
Both A and B
Is it possible to extend the Ram Air Turbine in flight?
Yes, event the blue system pressure is available.
Yes, but for automatically extend only.
Yes, Only speed under 100 knots.
Which hydraulic systems are pressurized by an EDP?
Yellow and green.
Blue and green
Yellow and blue
In normal operation, what is the blue hydraulic system pressurized by?
PTU
The electric pump.
EDP
Is it possible to stow the RAT in flight:
NO
YES
No, with special filling tool
What happens when the filter of the filling citcuit is clogged? (Level 3)
Fluid bypasses the filter element
Fluid is stopped, filling is impossible.
The filling pressure has to be increased
What is the main funtion of the restrictor: (Level 3)
To protect the system against overpressure.
To limit the pressure of the hand pump
To limit thermal expansion of the hydraulics fluid
Do the hydraulic reservoir have to be depressurized to refill with hydraulic fluid?:(Level 2)
No.
Yes
No, with special filling tool
Each hydraulic system “OVHT” status is monitored by sensor installed in:
Suction line
High pressure line
Return line
Which component(s) send a Warning and Fault signals on the blue hydraulic system?
Only the low air pressure switch
The high level detector
Overheat sensor, low air pressure switch and low level detector
In flight, the blue hydraulic system can be supplied by:
The RAT and the electrical pump.
The engine driven pump.
The PTU (Power Transfer Unit).
What happens if the hydraulic pressure drops, in the Yellow hydraulic systems?
The priority valve close automatically, cuts the pressure to the primary flight controls, in order to supply the flaps
The priority valve opens, and supply only the primary flight controls
The priority valve closes cut off hydraulic power to the flaps, in order to supply the other users
Where is the hydraulic system temperature sensor located?
In the reservoir
On the return manifold
On the HP. filter
During which operation is the leak measurement valve closed automatically
PTU operation.
Cargo door operation.
Hand pump operation.
1. How is PTU operation when PTU push button in AUTO position?
a. It operates automatically if there is a delta pressure of 500psi between the green / yellow or yellow / green hydraulic systems.
b. It operates automatically when engine starting.
c. It operates manually by release push button OFF.
2. Which are the sources of pressure on green hydraulic system?
a. Engine Driven Pump (EDP), Power Transfer Unit (PTU), Ram Air Turbine.
b. Engine Driven Pump (EDP), Power Transfer Unit (PTU).
c. Electric pump, Engine Driven Pump (EDP), Power Transfer Unit (PTU).
3. For preventing pump cavitation, all three reservoirs are pressurized to:
a. 43 PSI.
b. 70 PSI.
c. 50 PSI.
4. After maintenance on the hydraulic system, the reservoir pressurization can be done via:
a. pneumatic ground cart.
b. pneumatic system.
c. Engine #1 bleed air.
d. All of above.
5. Hydraulic fluid quantity can be checked via:
a. ECAM Hydraulic page.
b. Directly reservoir gage.
c. Green hydraulic service panel.
d. All of above.
6. Which are filter kinds on 3 hydraulic systems?
a. HP filters located in the downstream of EDP.
b. LP filters located in the return line.
c. HP filters, LP filters and case drain filters.
7. Follow MEL items, when LO LVL warning is false alert,
a. Hydraulic quantity need to be checked directly on gage or ECAM hydraulic page before each flight.
b. We have to drain reservoir empty and refill it again before first flight.
c. No need maintenance action required.
8. PTU is inhibited during which operations?
a. During starting engines sequence.
b. At first engine start and during cargo door operation.
c. When hydraulic reservoir low level.
9. You can depressurize hydraulic reservoirs:
a. by individual depressurized valves located in related hydraulic system service panels.
b. by using special tool.
c. by depressurize handle located in related hydraulic system service panels.
10. Before hydraulic reservoir filling, we must make sure that:
a. LDGs are extended and LDG doors are closed.
b. Forward and aft cargo doors are closed.
c. Thrust reverser are stowed.
d. All of above.
