Fuel

Question 1

Unpowered Aicraft with no External AC Power available:

Which electric Fuel pump(s) would be used to start?

Answer 1

DC Pump

Question 2

In Flight with a #1 Ejector Pump Failure:

• Will Fuel Pressure be lost on the left side? Why or why not?

• What other situations would command the AC pumps to come on automatically?

Answer 2

•No, The AC Pump 1 will automatically come on

•Engine Start and X-Fees

     Note: When AC power is available on the ground, AC Pump 2 will run for APU Start.

Question 3

With GPU powering aircraft:

• Which pumps will provide pressure for an APU Start

Answer 3

AC Pump 2

Question 4

When Will AC Pumps Come on Automatically?

Answer 4

1.) When Fuel pressure is Demanded and ejector output is insufficient:
- Engine Start
- Ejector Pump Failure

2.) X-feed Operations

3.) AC Power available on the ground, AC Pump 2 will run for APU Start.

Question 5

While performing the Power up checklist, there is no AC Power available. You start the APU:

• what Pump will Provide pressure for an APU Start?

Answer 5

DC Pump

Question 6

Fuel Quantity Reads

           5520                        5010

You wish to balance Tanks.
1.) What switch Action is required?
2.) What does that do to the Fuel System?

Answer 6

1.) Select Xfeed to Low 2

2.)
-Open XFEED Valve
-Turn on AC Pump 1

Question 7

What Happens if you Select the Xfeed Selector Knob to LOW 2?

Answer 7

Xfeed Valve Opens and AC PUMP 1 turns on providing fuel to both engines from Left wing tank.