Fuel

Question 0

Where is APU fuel supplied from?

Answer 0

Left collector tank

Question 1

Max pressure refueling

Answer 1

Left - 7,492 lbs
Right - 7,492 lbs
Center - 4,610 lbs
Total - 19,594 lbs

Question 2

How is fuel heated?

Answer 2

Oil to fuel heat exchanger

Question 3

How is the fuel tank protected from over pressure?

Answer 3

Over pressure relief valve (>5 psi)

Question 4

What is the purpose of the NACA scoops in flight?

Answer 4

Provide ram air pressure too maintain a positive pressure in the fuel tanks.

Question 5

When is fuel automatically balanced?

Answer 5

Fuel imbalance of more than 200 lbs between wings

Question 6

When does automatic fueling cease?

Answer 6

When fuel quantity of the low tank exceeds the other wing by 50 lbs

Question 7

FUEL IMBALANCE caution message

Answer 7

Imbalance exceeds 800 lbs between wing tanks

Question 8

Is there any indication that fuel is being transferred from the center tank?

Answer 8

No indications, it is fully automatic

Question 9

When is fuel transferred from the center tank?

Answer 9

When a wing tank drops below 94% it is transferred until the wing is full

Question 10

Limitation for takeoff with fuel in the center tank

Answer 10

Takeoff with fuel in excess of 500 lbs in the center tank is prohibited unless each wing tank has at least 4400 lbs of fuel

Question 11

How many fuel gauging probes?

Answer 11

• 17 total
• 6 in each wing
• 1 in each collector
• 3 in center tank

Question 12

Where is the fuel temperature monitored?

Answer 12

Fuel temperature sensor located in the right wing

Question 13

How many magnetic levels are installed?

Answer 13

• 5 total
• 2 in each wing
• 1 in center tank

Question 14

How are the collector tanks kept full?

Answer 14

Gravity and scavenge ejectors

Question 15

Max fuel imbalance

Answer 15

• 300 lbs for takeoff

- 800 lbs all other phases

Question 16

When is fuel transfer inhibited?

Answer 16

When the refuel/fueling panel switch is on

Question 17

When will the AUTO XFLOW INHIB status message disappear if the fueling panel switch is left on?

Answer 17

Lack of weight on wheels

Question 18

Where is the high pressure fuel pump located?

Answer 18

N2 accessory gearbox

Question 19

Minimum engine fuel temperature for takeoff

Answer 19

+5°c

Question 20

Minimum bulk fuel temperature for takeoff (Jet A)

Answer 20

-30°c

Question 21

What is the minimum bulk fuel temperature during flight (Jet A)

Answer 21

Above -40°c

Question 22

How many fuel filters are installed?

Answer 22

One for each engine