Fuel

Question 1

How is the Centre Wing Tank fuel scavenged?

Answer 1

4 jet pumps that pump into main tanks 2 and 3. Begins when main 2 & 3 fuel quantity decreases to approximately 27200kg. (LCF 40200lbs)

Pump will operate for approx 2 hours or until scavenge pump pressure is low; whichever occurs first

Question 2

Which crossfeed valves are controlled by fuel system logic when setting T/O flaps?

Answer 2

Crossfeed Valves 2 & 3

Question 3

What fuel tank quantity are you required to have selected CWT pumps on for Before Start Procedure?

Answer 3

Greater than or Equal to 7700kg
(17000lbs LCF)

Question 4

Describe how fuel quantity indication changes upon termination of fuel jettison

Answer 4

Fuel to remain changes from magenta to white, and flashes for 5 seconds

Question 5

What is the impact on the aircraft with an excessive fuel imbalance?

Answer 5

Adversely affects C of G
Creates more aerodynamic drag
Reduces fuel economy

Question 6

When do the Fuel System Management Cards open the reserve tank transfer valves?

Answer 6

400: Main 2 or 3 decreases to approx 18200kg
LCF: Main 2 or 3 decreases to approx 40200lbs
-8: Main 1 or 4 decreases to approx 6100kg

Question 7

In which tank is the fuel temperature measured from?

Answer 7

Main tank 1

Question 8

Which fuel tanks do reserve 1 and 4 transfer to in the -8?

Answer 8

Main tank 1 and 4

Question 9

Fuel Jettison in LCF, transfer valves open when main 2 and 3 decrease to?

Answer 9

20000lbs

Question 10

In the -8, what fuel quantity will fuel jettison complete to with selector on MLW?

Answer 10

Max Landing Weight + 3000kg