Fuel

Question 1

In terms of basics, what is the main process that happens when turning on/off the L/R ENG run switches?

Answer 1

Opens/closes fuel shutoff valves(SOVs)

Question 2

Scavenge ejector pumps do what?

Answer 2

Continuously move fuel from the main tank to the collector tank.

Question 3

The fuel xfer system only operates when there is?

Answer 3

Fuel in the center tank.

Question 4

The maximum amount of fuel that can be transferred at any given time

Answer 4

From ctr to wings: 400lbs

From wings to ctr: 800lbs

Question 5

What causes a FUEL IMBALANCE caution message?

Answer 5

Imbalance between L/R tank exceeds 800lbs

Question 6

With both AC boost pumps in AUTO, what would cause the Fuel Quantity Computer(FQC) to automatically start transferring fuel between main tanks?

Answer 6

400lbs

Question 7

True or False:

Refueling can be done with battery power only?

Answer 7

True

Question 8

Can defueling can be done with only Battery power?

Answer 8

No. AC power is needed.

Question 9

What happens if both main ejector pumps fail with both L/R BOOST PUMP Rotary switches set to AUTO?

Answer 9

AC BOOST pumps automatically come on.

Question 10

When the L/R BOOST PUMPS are set to AUTO, the AC boost pump will start automatically when:

Answer 10

1. Low fuel pressure is sensed
2. A fuel imbalance is sensed
3. Fuel is required for the APU