FUEL

Question 1

1 | What is the normal in-flight fuel management scheme? [ FCOM-DSC-28-10-30 ]

Answer 1

º Use center tank first, then the wing tanks

Question 2

2 | How many fuel pumps are installed? [ FCOM-DSC-28-10-30, FCOM-DSC-28-10-50 ]

Answer 2

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

Question 3

3 | With full fuel, when do the center tank fuel pumps operate? [ FCOM-DSC-28-10-30 ]

Answer 3

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

Question 4

4 | What will cause a FUEL MODE SEL FAULT light? [ FCOM-DSC-28-20 ]

Answer 4

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

Question 5

5 | When do the main tank outer cells drain into the inner tanks? [ FCOM-DSC-28-10-30 ]

Answer 5

º When the inner tank quantity reaches 1,650 lbs

Question 6

6 | If only one inner tank reaches 1,650 lb, what happens to the other transfer valve? [FCOM-DSC-28-10-30 ]

Answer 6

º All 4 transfer valves open

Question 7

7 | Once opened to transfer fuel, how are the fuel transfer valves closed? [ FCOM-DSC-28-10-30 ]

Answer 7

º Automatically at the next refueling operation

Question 8

8 | How is the IDG cooled?
[ FCOM-DSC-28-10-60, FCOM-DSC-70-40-50 ]

Answer 8

º 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

Question 9

9 | If the IDG return fuel fills the wing tanks, what occurs? [ FCOM-DSC-28-10-30 ]

Answer 9

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

Question 10

10 |What does an amber FAULT light in the FUEL PUMP pushbutton indicate? [ FCOM-DSC-28-20 ]

Answer 10

º Low fuel delivery pressure

Question 11

11 |Can fuel be transferred from one tank to another? [ FCOM-DSC-28-10-70 ]

Answer 11

º Only during ground refueling

Question 12

12 |Why are the outer wing tanks drained last? [ FCOM-DSC-28-10-10 ]

Answer 12

º Structural wing bending moment relief

Question 13

13 |When does the APU fuel pump run? [ FCOM-DSC-49-10-20 ]

Answer 13

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

Question 14

14 |What does the REFUEL message on the ECAM indicate? [ FCOM-DSC-28-30 ]

Answer 14

º The refueling control panel door is not closed

Question 15

15 |What does an amber boxed ECAM FOB indicate? [ FCOM-DSC-28-20 ]

Answer 15

º Some fuel is unusable

Question 16

16 |What controls the flow of fuel from the center tank to the inner tanks on aircraft that have jet pumps? [ FCOMDSC-28-10-30 ]

Answer 16

º The Fuel Level Sensing Control Unit (FLSCU)