Fuel

Question 1

How many tanks does the airplane have?

Answer 1

2 integral tanks

Question 2

Where is the fuel tank temp taken?

Answer 2

Left tank

Question 3

What types of fuel pumps are in each tank?

Answer 3

• primary ejector pump
• ACMP
• DCMP (right tank)
• 3 scavenger ejector pumps

Question 4

What is the primary ejector pump?

Answer 4

• venturi pump with no moving parts and no electrical power used by the respective engine
• powered by motive flow

Question 5

What is the purpose of the ACMP

Answer 5

• back-up pump in case of primary ejector pump failure
• engine start
• crossfeed ops

Question 6

What is the purpose of the DCMP?

Answer 6

Used to start the APU or engine start if AC power or the ACMP is not available

Question 7

What is the purpose of the scavenge pumps?

Answer 7

Maintains fuel level in the collector box

Question 8

What pump is used once an engine is started?

Answer 8

Associated primary ejector pump

Question 9

What is the purpose of the collector box?

Answer 9

• keeps the fuel pumps submerged

- ensures constant fuel flow to the respective engine

Question 10

What is the surge/vent tank?

Answer 10

• collects fuel during wing down maneuvers and returns it to the main tank once the wings are level
• equalizes tank pressure with atmosphere inflight and during refueling

Question 11

Can fuel be transferred from tank to tank or dumped overboard?

Answer 11

No

Question 12

What happens when the crossfeed switch is selected to LOW 1?

Answer 12

• crossfeed valve is opened

- commands the ACMP 2 to ON to provide fuel from the right tank to both engines

Question 13

What is the only way to close the engine fuel SOV?

Answer 13

Pull the associated engine fire extinguisher handle

Question 14

When will the FUEL 1(2) LO LEVEL EICAS message be displayed?

Answer 14

660 lbs of fuel remaining in the associated tank

Question 15

When will the crew declare min fuel?

Answer 15

In the pilot’s judgment further delay will cause the flight to land with less than the greater of reserve fuel plus alternate fuel(when required) or 2660 lbs

Question 16

When will the crew declare emergency fuel?

Answer 16

1800 lbs