Fuel

Question 1

Q1 | FUEL PANEL

What is the normal in-flight fuel management scheme?

Answer 1

Use center tank first, then the wing tanks

[ FCOM-DSC-28-10-30 ]

Question 2

Q2 | FUEL PANEL

How many fuel pumps are installed?

Answer 2

• 2 in each wing tank
• 1 APU pump to provide fuel to the APU when the left wing/center tank pumps are off
• 2 in center tank
• 2 center tank transfer jet pumps (Only on tail N246NV through N257NV, N276NV)

[ FCOM-DSC-28-10-30, FCOM-DSC-28-10-50 ]

Question 3

Q3 | FUEL PANEL

With full fuel, when do the center tank fuel pumps operate?

Answer 3

• For 2 minutes after BOTH engines are started (if slats are retracted, pumps will continue to operate)
• After slat retraction
• Continue to run for 5 minutes until the center tank is empty or slats are extended

[ FCOM-DSC-28-10-30 ]

Question 4

Q4 | FUEL PANEL

What will cause a FUEL MODE SEL FAULT light?

Answer 4

Center tank contains more than 550 lb and either main tank has less than 11,000 lb

[ FCOM-DSC-28-20 ]

Question 5

Q5 | FUEL PANEL

When do the main tank outer cells drain into the inner tanks?

Answer 5

When the inner tank quantity reaches 1,650 lbs

[ FCOM-DSC-28-10-30 ]

Question 6

Q6 | FUEL PANEL

If only one inner tank reaches 1,650 lb, what happens to the other transfer valve?

Answer 6

All 4 transfer valves open

[FCOM-DSC-28-10-30 ]

Question 7

Q7 | FUEL PANEL

Once opened to transfer fuel, how are the fuel transfer valves closed?

Answer 7

Automatically at the next refueling operation

[ FCOM-DSC-28-10-30 ]

Question 8

Q8 | FUEL PANEL

How is the IDG cooled?

Answer 8

• By fuel from the HP fuel pump drawn in from the fuel manifold and then returned to its respective outer tank
• When full the outer tank spills over to the inner tank

[ FCOM-DSC-28-10-60, FCOM-DSC-70-40-50 ]

Question 9

Q9 | FUEL PANEL

If the IDG return fuel fills the wing tanks, what occurs?

Answer 9

The center tank pumps turn off until the wing tank quantity reduces by 1,100 lb

[ FCOM-DSC-28-10-30 ]

Question 10

Q10 | FUEL PANEL

What does an amber FAULT light in the FUEL PUMP pushbutton indicate?

Answer 10

Low fuel delivery pressure

[ FCOM-DSC-28-20 ]

Question 11

Q11 | FUEL PANEL

Can fuel be transferred from one tank to another?

Answer 11

Only during ground refueling

[ FCOM-DSC-28-10-70 ]

Question 12

Q12 | FUEL PANEL

Why are the outer wing tanks drained last?

Answer 12

Structural wing bending moment relief

[ FCOM-DSC-28-10-10 ]

Question 13

Q13 | FUEL PANEL

When does the APU fuel pump run?

Answer 13

When the wing or center tank pumps are off or when the aircraft is on battery power only

[ FCOM-DSC-49-10-20 ]

Question 14

Q14 | FUEL PANEL

What does the REFUEL message on the ECAM indicate?

Answer 14

The refueling control panel door is not closed

[ FCOM-DSC-28-30 ]

Question 15

Q15 | FUEL PANEL

What does an amber boxed ECAM FOB indicate?

Answer 15

Some fuel is unusable

[ FCOM-DSC-28-20 ]

Question 16

Q16 | FUEL PANEL

What controls the flow of fuel from the center tank to the inner tanks on aircraft that have jet pumps?

Answer 16

The Fuel Level Sensing Control Unit (FLSCU)

[ FCOM-DSC-28-10-30 ]