SH Chapter 11 - Fuel

Question 1

1) What is the normal in-flight fuel management sequence?

Answer 1

Center tank
Inner tanks (each down to 1650 lbs)
Outer tanks (fuel transfers to inner)

Question 2

2) How many fuel pumps are installed?

Answer 2

6

2 in each wing tank and two in the center

Question 3

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

Answer 3

In auto, pumps run at engine start for two minutes and before or after engine start sequence if slats are retracted.
Center pumps will turn off automatically when inner tank full and will turn back on when wings have used approx 1100lbs

Question 4

4) What will cause a FUEL MODE SEL FAULT light?

Answer 4

Center tank has more than 550lbs of fuel and left for right wing tank has less than 11,000lbs

Question 5

5) When do the main tank outer tanks drain into the inner tanks?

Answer 5

When the inner has drained to 1650lbs.

Question 6

6) If only one inner tank reaches 1650 lbs, what happens to the other inter-tank transfer valve?

Answer 6

Will open as well. Ensures simultaneous transfer to both wings.

Question 7

7) Once opened to transfer fuel, how are the inter-tank fuel transfer valves closed?

Answer 7

Remain open until next refueling

Question 8

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

Answer 8

Fuel overflows into inner tank through a spill pipe

Question 9

9) What does an amber FAULT light L(R) TK PUMPS pushbutton indicate?

Answer 9

Delivery pressure has dropped.

Question 10

10) Why is fuel stored in the outer wing tanks?

Answer 10

Wing bending and flutter relief

Question 11

11) When does the APU fuel pump run?

Answer 11

When feed pressure low.

Due to loss of tank pumps or loss of normal AC electrical supply.

Question 12

12) What does the REFUELG message on the ECAM indicate?

Answer 12

Door to the fueling panel is open.

Question 13

13) What does it mean when the ECAM FOB indication is half-boxed in amber?

Answer 13

• Center tank pumps fail or are switched off
• Both inter-tank transfer valves fail open when inner tank at low level
• Displayed quantity is not all useable