96 Questions
How many pumps are there in the wing or center tanks:
Two fuel pumps in each tank
Normally, where can you check the fuel quantity of each tank:
On fuel page only, on ECAM lower display
With all fuel pump switches on, are wing tank pumps running while center tank is supplying?
Yes, wing tank pumps are always running
Excluding the surge/vent tank, how many cells are in each wing tank on an A320 CEO?
Two
Where is the vent surge tank located?
In the outer section of each wing
The fuel remaining in the surge tank scavenged into the adjacent cell, which is (A320):
The outer cell
Which type of motor controls the fuel x-feed:
Double
Where are the transfer valves located:
On the sealed rib of each wing tank (i.e. between each inner and outer cell)
What is the purpose of the pressure relief sequence valves:
When all pumps are running, center pumps will deliver fuel preferentially
In normal operation, each engine is supplied by:
Two wing tank pumps and one center tank pump
Is gravity feeding from center tank possible:
Yes
The LP valves are controlled to the off position by:
Engine master switches and fire push buttons
The normal tank filling order is:
Wing tanks then center tank
The normal tank filling order is:
Wing tanks then center tank
Amber fault light illuminates on tank pump P/B when:
The delivery fuel pressure drops
Amber fault light illuminates on ‘mode sel.’ P/B when:
Center tank has more than 250 kg and any wing tank has less than 5,000 kg
On the A320 CEO, the maximum fuel imbalance (inner tanks with heavier tank full) is:
1,500 kg
The fuel used indication is automatically reset:
When the engine is restarted on the ground
FOB (fuel on board) boxed amber on ECAM fuel page means
Both transfer valves in either wing tank fail to open when inner cell is at low level, or the center tank pumps are off
Fuel on board half boxed amber on upper ECAM means:
The quantity shown is not fully usable (intercell valve failure or loss of ctr. tank pumps)
If open when will the transfer valves close again:
Transfer valves close automatically at the refueling selection
For what purpose is fuel used by the electrical system:
To cool the IDG oil
APU fuel is supplied by:
Either main (AC) pumps or APU pump
With slats extended, the center tank pumps run on ground:
Yes, after engine start for 2 mins
What does the mode selector push-button control:
Center tank pumps only
When the center tank is empty (mode auto), center tank pumps:
Stop automatically, 5 mins after low level is reached in the center tank
What happens to the IDG cooling fuel when the outer cells are full?
Fuel overflows into the inner cell through a spill pipe
What happens to the IDG cooling fuel when the wing tank is full?
The system selects center tank pumps off, wing tank pumps feed approx. 500 kg, and the center tank pumps run again
Suction valves are:
Normally closed by pump pressure
Why has a 2% additional space been provided in each fuel tank:
For fuel expansion without spillage into the vent surge tank
During take-off the center tank fuel is:
Not supplied while slats are extended
With fuel in all tanks (A320), in flight, fuel is used:
From the center tank, then from inner cells to a predetermined level when outer cell fuel combines with inner cell fuel
In normal operation the crossfeed valve is:
Closed for take off
Are the engines still supplied in case of fuel filter clog?
Yes, bypassing the fuel filter (crew awareness only)
What is the minimum fuel quantity for take-off:
1,500 kg
Normal hydraulic power is provided by:
Engine driven pumps for green and yellow, electric pump for blue, electric pump for yellow
The power transfer unit is:
Reversible between green and yellow
In flight, if blue electric pump fails, blue system:
Can be recovered by RAT
With both engines stopped, how is it possible to pressurise the green system:
By the yellow electric pump and the PTU
The RAT is automatically extended in case of:
Loss of engine and APU main generators
On the ground the blue system is pressurised when:
One engine is running
Engine 2 Hydraulic pump energises:
The yellow system pump and the green system via the PTU should the green system pump fail
The yellow system comprises:
One engine driven pump, one electric pump, one hand pump
The green hydraulic system can be pressurised by:
The No. 1 engine hydraulic pump or PTU
The priority valves operate in case of:
Low hydraulic pressure
The fire shut off valves shut off:
The yellow and green systems
In case of blue electric pump failure, when the RAT MAN ON P/B on the HYD overhead panel is pressed:
The blue hydraulic system is pressurised by the RAT
The hydraulic reservoirs are pressurised:
From the No. 1 engine or the pneumatic system
In flight the engine 1 pump fault light illuminates amber in case of:
Reservoir low oil pressure, overheat, low pressure, or pump low pressure
If on the ground with engine one stopped, does the engine one pump fault light illuminate amber due to green pump low pressure?
No
In case of reservoir overheat, the fault lights of the faulty system stay on for:
As long as the overheat is detected
On ground and before engine start, with blue pump auto and A/C power available, the blue pump is:
Energised when the blue pump over-ride P/B is pressed
The blue system includes operation of:
The slats
The RAT when extended in flight, pressurises:
The blue system
The yellow system includes operation of:
The right elevator only
The yellow system may be powered by:
Engine 2 hydraulic pump or the yellow electric pump or the PTU
The yellow system includes operation of:
The flaps
During first engine start the PTU is:
Inhibited
The RAT can be restored:
On ground only
In flight the RAT is extended:
Manually or automatically
In flight when the RAT is automatically extended:
The blue hydraulic system is pressurised and the emergency generator runs
Is it possible to interchange hydraulic fluid from green to yellow or yellow to green system:
No
The fire shut off valve closes when:
The fire P/B is released out
If the green system is lost, slat operation is:
Slow
If the green system is lost, flap operation is:
Slow
The green system operates:
Spoilers 1 & 5
The green system operates:
The left elevator
The green system operates:
Both ailerons
The green system operates:
Reverser 1
The yellow system operates:
Reverser 2
On ground, blue electric pump P/B at auto, the circuit is energised if:
One engine is running or blue pump override P/B has been pressed
If the blue system is lost, the slats are:
Slow
If blue system is lost, the flaps are:
Normal
The blue system operates:
Spoiler 3
The RAT can be extended:
Both manually from the overhead panel and automatically in case of loss of power to AC BUS 1 & AC BUS 2
The blue system operates:
Both ailerons
Can you operate a cargo door when no electrical power is available:
Yes, using the hand pump
Yellow electric pump P/B switch off and cargo door manual selector valve set at open or close position, the PTU and flight controls are:
Inhibited
If yellow system is lost, the slats are:
Normal
If yellow system is lost, the flaps are:
Slow
The engine 2 fire valve is between the yellow reservoir and:
The engine 2 hydraulic pump
The yellow system operates:
Spoilers 2 & 4
In case of single hydraulic system low pressure:
The master caution light illuminates and the single chime sounds
In case of reservoir low air pressure, the hydraulic system affected is:
May be recovered after descending to a lower altitude
With a dual hydraulic system failure, the flight control law (before gear extension) is:
Alternate law
With green hydraulic system lost:
The landing gear must be extended by gravity
With green hydraulic system lost:
The NWS is lost
With green hydraulic system lost, the braking system is:
Alternate
With green hydraulic system lost, the anti-skid is:
Operative on the yellow hydraulic system
PTU at auto, the PTU automatically runs
When differential pressure between green and yellow systems is more than 500 pSI
PTU running the pressure delivered by the PTU is:
Stable at normal system pressure (3,000 psi)
Hydraulic green system only remaining, the auto-pilot function is:
Lost
Hydraulic green system only remaining, the horizontal stabilizer is:
Available
With green and yellow hydraulic systems lost, manual pitch trim (stabilizer) is:
Lost
Hydraulic green system only remaining, the auto brake is:
Available
With hydraulic blue system only remaining:
Seven full brake applications are available
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