FUEL

Question 2

When the aircraft has been refueled to maximum capacity, the fuel can expand by ….?

Answer 2

2 % (20 °C
temperature rise) without spilling.

Question 3

There is an overpressure protector in WHICH TANKS?

Answer 3

each vent,
outer
inner tank and
between the center tank and the left inner tank.

Question 4

Total fuel tank capacity ?

Answer 4

19 t Approx

Question 5

How many fuel pumps in total ? CEO & NEO

Answer 5

CEO - 6 fuel pumps
NEO - 4 fuel pumps

Question 6

How do CTR tank pumps get more preference ?

Answer 6

because inner tanks are fitted with pressure relief sequence
valves which ensure that, when all pumps are running, the center tank pumps will deliver fuel
preferentiall

Question 7

How many INTERTANK TRANSFER VALVES

Answer 7

Two electrical transfer valves are mounted in each wing to permit fuel transfer from outer to inner
tank.

Question 8

cross feed valve controlled by how many motor?

Answer 8

A cross feed valve controlled by a double motor

Question 9

ENGINE LP VALVES controlled by which switches ?

Answer 9

The ENG MASTER lever
& ENG FIRE pb

Question 10

In normal opes how are suction valve which are fitted to inner tank pumps inhibited from sucking fuel ?

Answer 10

They are Closed by pump’s pressure in normal operation

Question 11

WHat is the fuel feed sequence in A320 CEO?

Answer 11

The center tank.

The inner tanks: Each inner tank empties down to 750 kg

The outer tanks: Fuel transfers into the inner tanks

Question 12

WHat is the fuel feed sequence in A320 NEO?

Answer 12

The center tank : Fuel transfers into the inner tanks.

The inner tanks : Each inner tank empties down to 750 kg

The outer tanks : Fuel transfers into the inner tanks

Question 13

In NEO how is fuel transferred from centre tank to inner tank ?

Answer 13

When the transfer valve
is open, fuel from the inner tank pumps flows through the jet pump and creates a suction in it. This
suction moves the fuel from the center tank to the related inner tank.

Question 14

APU fuel pump supplied by ?

Answer 14

This pump normally runs off the AC ESS SHED, but
runs off the AC STAT INV BUS if the AC ESS SHED fails

Question 15

WHat is the fuelling sequence during automatic refuelling ?

Answer 15

Automatic refueling starts with the outer tanks. If the selected fuel load exceeds the wing tank capacity,
the center tank is simultaneously refueled.
When an outer tank is full, the fuel overflows into the inner tank through a spill pipe

Question 16

WHat is the fuelling sequence during manual refuelling ?

Answer 16

During manual refueling, it fill the wing tanks first, then the center tank,

Question 17

WHat is approx refuelling time for wing tanks only and all tanks ?

Answer 17

-17 min for wing tanks
- 20 min for all tanks

Question 18

How many FQIs?

Answer 18

1 FQI with 2 channels .
If channel 1 fails , channel 2 activates

Question 19

What does FQI do ?

Answer 19

transmits the quantity and temperature of fuel in the tanks, to
the ECAM.

Question 20

What does FLSU ?

Answer 20

When fuel quantity in one wing tank goes below 750 kg , the low-level sensor triggers the LO
LVL warning on ECAM. The LO LVL warning is totally independent from the displayed fuel quantity
indication of the tank.

it controls the IDG cooling recirculation
system and the center-tank-to-wing-tank fuel transfer system.

Question 21

WHat does fuel tank interting system do ?

Answer 21

The aim of this system is to reduce the flammability in the fuel tanks that have a high flammability
exposure.
The fuel center tank is the only one that has a high flammability exposure.

To reduce the flammability in the center tank, the Fuel Tank Inerting System produces an
oxygen-depleted air that goes in the center tank to replace the ambient air

Question 22

CTR TK MODE SEL pb-sw in AUTO position , what does it do ?

Answer 22

Control of center tank transfer valves is automatic:

• They run at engine start for 2 min,
• Before or after the engine start sequence, the pumps run if the slats are retracted,
• They stop automatically 5 min after center tank low level is reached
• They open if the associated inner tank is not full,
• They stop automatically 5 min after center tank low level is reached.

Question 23

CTR TK MODE SEL pb-sw - FAULT light , what does it mean ?

Answer 23

FAULT light and ECAM alert come on when all of the following occur:
- The center tank has more than 250 kg
- The left or right wing tank has less then 5 000 kg
- The CTR TK MODE SEL pb-sw is at AUTO

Question 24

X feed On white light meaning

Answer 24

The valve is selected to open positoon
Actual valve open is indicated by green OPEN light

Question 25

X feed OPEN (green) light meaning

Answer 25

OPEN light comes on, when the valve is fully open.

Question 26

Two dashes appear across the last two digits when ....?

Answer 26

FQI is inaccurate

Question 27

When is outer indication is boxed amber?

Answer 27

if both transfer valves fail to open when the inner is at lowlevel.

Question 28

WHen is center tank indication is boxed amber

Answer 28

if both center tank pumps are failed, or are switched OFF.

Question 29

When is FOB indication half-boxed in amber

Answer 29

Center tank pumps fail, or are switched OFF. - Both transfer valves fail to open, when the inner tank is at low level.

Question 30

In ECAM how do you identify a FUEL QUANTITY - OVERFLOW INDICATION

Answer 30

In the case of wing overflow, the associated inner tank quantity indication turns amber.

Question 31

How in an imbalance advirosy denoted on fuel ecam page ?

Answer 31

when the difference between the fuel quantities in the two wings is greater than 1 500 kg The wing inner and outer tank indications pulse with the highest fuel level.

Question 32

IF FQI is degraded , how is it shown on ECAM fuel page ?

Answer 32

If the FOB indication is displayed with two dashes across the last two digits, the FQI is in degraded mode. In this case, the ECAM FUEL page can be called on ECAM lower display to determine which tank is affected.