Review Questions - Fuel

Question 1

What is the normal in-flight fuel management sequence?

Answer 1

Use center tank first, then the wing tanks

Question 2

How many fuel pumps are installed?

Answer 2

a. 2 in each wing tank
b. 1 APU pump to provide fuel to the APU when the left wing/center tank pumps are off
c. 2 in center tank (500, 600, 800 series aircraft and N361VA)
d. 2 center tank transfer pumps (aircraft N281VA and subsequent & N362VA and subsequent)

Question 3

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

Answer 3

a. For 2 minutes after BOTH engines are started (if slats are retracted, pumps will continue to operate)
b. After slat retraction
c. Continue to run for 5 minutes until the center tank is empty or slats are extended
d. With slats retracted, when 1100 lbs is used from wing tank

Question 4

What will cause a FUEL MODE SEL FAULT light?

Answer 4

a. Failure of the AUTO mode
b. Center tank contains more than 550 lb and the left or right wing tank has less than 11,000 lbs

Question 5

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

Answer 5

When the inner tank quantity reaches low level (about 1,650 lbs)

Question 6

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

Answer 6

All 4 transfer valves open

Question 7

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

Answer 7

Automatically at the next refueling operation

Question 8

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

Answer 8

The fuel overflows to the inner tank through a spill pipe.

Question 9

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

Answer 9

Low fuel delivery pressure

Question 10

Why is fuel stored in the outer wing tanks?

Answer 10

For wing bending and flutter relief

Question 11

When does the APU fuel pump run?

Answer 11

When fuel feed pressure is low (due to loss of tank pumps or loss of normal AC electrical supply)

Question 12

What does the REFUELG message on the ECAM indicate?

Answer 12

The door of the refuel control panel on the fuselage is open

Question 13

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

Answer 13

• If center tank pumps fail or are switched OFF
• If both inter-tank transfer valves fail to open when the inner tank is at a low level
• When the displayed quantity is not all usable