ATA 28 Fuel

Question 1

How is fuel drained from the surge tank?

Answer 1

????

Question 2

How many fuel tanks are there and where are they located?

Answer 2

3, one on each wing and the center

Question 3

What supplies fuel first in flight?

Answer 3

Center tank supplies fuel first before the wing tanks due to the higher pressure of the center tank fuel pumps.

Question 4

Fueling shutoff valves are ________ controlled and ____________ operated.

Answer 4

Electronically, fuel pressure

Question 5

How are the fuel tanks identified?

Answer 5

1 Left, #2 Right and #3 center tank

Question 6

Where are the main tank forward boost pumps located?

Answer 6

Rear Spar

Question 7

All fuel tanks have fuel, all fuel pumps switches are on: Why does the fuel feed
the engines from the center tank?

Answer 7

Center tank pumps have higher pressure which overrides the other fuel pumps

Question 8

Where is the APU fuel shutoff valve located?

Answer 8

Center Section Rear Spar

Question 9

What is the purpose of the defuel valve?

Answer 9

To remove fuel from each tank

Question 9

How is the defuel valve operated?

Answer 9

A Handle that is moved into the open position. The handle is also a position indicator and you can’t close the panel with it pulled

Question 10

What causes the center tank scavenge system to operate?

Answer 10

When the #1 tank is at 50%.

Question 10

How would YOU function test the center tank scavenge system?

Answer 10

BITE test through the CDU(Control display unit).

Question 11

The airplane is fully powered you open the refuel panel door, no lights, no power
to the panel. What might be wrong? How could you still refuel?

Answer 11

?

Question 12

What are the two power sources for an engine spar valve?

Answer 12

Fuel spar valve battery, backup is hot buss battery

Question 13

Can you suction feed the engines from the center fuel tank?

Answer 13

No

Question 14

How is the APU DC pump turned on? (short answer, one word, starts with an A)

Answer 14

APU Switch on the P5 overhead panel

Question 15

Describe the procedure to pressure defuel the #1 main fuel tank.

Answer 15

Connect the refuel nozzles
Move the handle on the defuel valve to the open position
Turn on the boost pumps to #1 main fuel tank
Open the crossfeed valve if necessary
Turn the boost pumps off when the tank is empty
Move the handle on the defuel valve to the closed position
Disconnect the fueling nozzles.

Question 16

Where is the FQPU located?

Answer 16

Ceiling of the forward cargo compartment forward of the cargo door

Question 17

How is fuel quantity BITE performed?

Answer 17

CDU

Question 18

Where are the surge tanks found?

Answer 18

Outboard of each main tank and they collect overflow

Question 19

How can fuel enter the surge tank?

Answer 19

Overfilled tank
From vent system

Question 20

What do the fuel float switch’s do?

Answer 20

Remove power to the fueling shutoff valve when the fuel tank is full

Question 21

What does the tank 1 forward boost pump switch control?

Answer 21

Tank 1 forward boost pump relay

Question 22

When does suction supply from main tank 1 and 2 occur?

Answer 22

When all boost pumps in one tank are off and the crossfeed valve is closed.

Question 23

Which tank does the APU draw fuel from?

Answer 23

Left

Question 24

What is the APU fuel feed line made of?

Answer 24

Single, shrouded. flexible, rubber, kevlar line

Question 25

What does the defuel valve connect?

Answer 25

The R/H engine fuel feed manifold with defuel manifold

Question 26

Why do you open the defuel valve?

Answer 26

Pressure defuel
Suction defuel
Fuel Transfer

Question 27

Where do you find the refueling panel?

Answer 27

Leading edge of the R/H wing