Fuel

Question 1

What are the fuel quantities for gravity refueling ?

Answer 1

Total 14,810

Mains 7,405

Question 2

How is the fuel moved from the center tank to the main tanks?

Answer 2

Transfer ejectors

Question 3

How is the fuel moved from the main tanks to the collector tanks?

Answer 3

Scavenge ejectors

Question 4

How is fuel moved from the collector tanks to the engine driven high pressure fuel pump?

Answer 4

Main ejectors (backed up by boost pumps)

Question 5

What are the fuel quantities for pressure refueling?

Answer 5

Total 19594
Mains 7492
Center 4610

Question 6

What is the function of the electric boost pumps?

Answer 6

To provide initial fuel for engine start and to back-up the main ejectors

Question 7

What is the flight deck indication of a high pressure fuel pump failure?

Answer 7

Engine flameout

Question 8

What is the maximum fuel imbalance?

Answer 8

300 for takeoff

800 for all other phases

Question 9

When will the fuel system automatically begin transferring fuel?

Answer 9

200 lb fuel imbalance

Question 10

When are the boost pumps automatically energized?

Answer 10

Low pressure from the main ejectors (if the pumps are armed)

Question 11

Where is the high pressure fuel pump located?

Answer 11

N2 accessory gearbox

Question 12

Where is the bulk fuel temperature taken?

Answer 12

Right main tank

Question 13

What is minimum bulk fuel temp for take-off (jet-A)?

Answer 13

-30° C

Question 14

What is the minimum bulk fuel temp during flight (jet A)

Answer 14

Above -40°C

Question 15

How is engine fuel heated?

Answer 15

Fuel/oil heat exchanger

Question 16

What is the minimum engine fuel temperature for takeoff?

Answer 16

+ 5° C

Question 17

What is the limitation if the center tank has > 500 lbs of fuel?

Answer 17

Each main tank must have at least 4400 lbs

Question 18

Which bus powers the refuel/defuel panel and refuel/defuel SOVs?

Answer 18

APU battery direct bus

Question 19

Where is the refuel/defuel panel located?

Answer 19

The fuselage forward of the right wing

Question 20

Where is the single point adapter located ?

Answer 20

Right wing root

Question 21

What happens before first flight of the day if airplane was cold soaked at -30°C (22°F) or below for more than 8 hours?

Answer 21

The engines must be motored for 60 seconds and FAN rotation must be verified before an engine start is initiated.

Thrust reversers must be actuated until the deploy and stow cycles are less than 2 seconds.