Fuel

Question 1

The expanded fuel quantity display (left main, center and right main) appears

for any of the following conditions.

Answer 1

One or both crossfeed valves open

One or more fuel tank qty indications inop

Fuel in Center(qty is amber)

FUEL QTY LOW

FUEL IMBALANCE

On the ground & one or more engines off

AIMS BP-16 or later software: FUEL FLOW ENG L/R

Question 2

The temperature is normally displayed in white.

It is displayed in amber when

Answer 2

the fuel temperature is

at or below the minimum defined temperature.

Question 3

During jettison, the TO REMAIN quantity replaces the EICAS display

Answer 3

fuel temperature indication.

Question 4

Each fuel tank has 2

Answer 4

AC-powered pumps.

Question 5

There is one DC-motor-driven pump located in the left main tank, which

supplies the APU when

Answer 5

AC power is not available.

Question 6

Center tank fuel pumps are called override / jettison pumps.

They operate at a higher output pressure than main tank pumps,

to ensure center tank fuel is

Answer 6

used before wing tank fuel.

Question 7

For main tank pumps, any one pump can supply adequate fuel to operate

Answer 7

one engine under all thrust conditions.

Question 8

The fuel jettison system allows jettison from

Answer 8

all fuel tanks during an in-flight emergency.

Question 9

Fuel is jettisoned through jettison nozzle valves inboard

Answer 9

of each aileron.

Question 10

Jettison pumps in the main tanks and override / jettison pumps in the center tank

pump fuel

Answer 10

overboard through the jettison nozzle valves.

Question 11

For the normal pre-flight configuration of the fuel panel, all pump switches

should be

Answer 11

OFF.

Question 12

With center tank pump switches “OFF” the pressure lights are inhibited.

With AC power established and the APU running the left forward pump

Answer 12

operates regardless of switch position.

Question 13

Prior to engine start all main tank pumps must be

Answer 13

selected ON.

Question 14

With fuel in the center tank, and any MAIN tank fuel pump selected ON,

EICAS

Answer 14

FUEL IN CENTER displays.

Additionally EICAS fuel quantity indications are expanded on the ground and

one or both engines are off.

Question 15

On the ground, both center fuel pumps operate only when two electrical sources

Answer 15

are available.

Question 16

With only one power source available and the center pump switches ON,

the right center pump is

Answer 16

load shed.

The right PRESS light illuminates

but the pump pressure EICAS message is

inhibited.

Question 17

As the center tank fuel pumps operate at a higher pressure than the main tank

pumps, notice that APU fuel is being supplied by

Answer 17

the left center tank fuel pump whenever it is running.

Question 18

A fuel imbalance pointer is displayed on the expanded fuel quantity display next

to the low tank quantity for the following imbalance conditions.

A solid white pointer is displayed if:

A solid amber fuel imbalance pointer replaces the white pointer if the “FUEL IMBALANCE” message is displayed.

Answer 18

main tank fuel differs more than 1,000 lb, main tank fuel differs more than

200 lb and a crossfeed valve is open.

the “FUEL IMBALANCE” message is displayed.

The pointer will flash if fuel balancing is going in the wrong direction.

Question 19

When fuel is back in balance within 200 lb between the main tanks,

the EICAS message “FUEL IMBALANCE” disappears and

Answer 19

the “FUEL BALANCED” replaces “FUEL QTY” on the expanded fuel quantity

display and flashes for 5 sec.

Question 20

If a center pump has low output pressure with less than approximately

Answer 20

2,400 lb of fuel remaining, the FUEL LOW CENTER EICAS advisory message

displays with the PRESS light.

Then turn OFF the center pump switches.

Question 21

Scavenge pumps operate automatically to transfer any residual

Answer 21

center tank fuel to the main tanks.

Question 22

Fuel scavenging begins when either main tank quantity is less than

Answer 22

29,000 lb.

Question 23

When the desired FUEL TO REMAIN value is reached,

the selector is released and it returns to the center position.

The selector knob must be left in the out position. If it is pushed in the TO REMAIN fuel reverts to Maximum Landing Weight fuel.

Answer 23

the TO REMAIN fuel reverts to Maximum Landing Weight fuel.

Question 24

Note that center tank fuel will not jettison with

Answer 24

center tank pumps OFF.

Question 25

When the airplane is heavy and loaded near the forward CG,

fuel is jettisoned

from

Answer 25

the center tank first to keep CG within limits.

Main tank jettison pump operation is

delayed and jettison time is automatically adjusted.

Question 26

When the fuel to remain target is reached,

jettisoning terminates.

The TO REMAIN value on EICAS flashes to alert the crew. Note: at least 11,500 lb of fuel will remain in each main tank after jettison is complete.

Answer 26

flashes to alert the crew.

Note: at least 11,500 lb of fuel

will remain in each main tank after jettison is complete.

Question 27

After automatic jettison termination, the nozzle valves must be———

the FUEL TO REMAIN selector ———-,

as it was used to manually set fuel to remain,

and finally, the ARM switch is———–

Answer 27

manually closed,

pushed in

turned OFF.

Question 28

If the valve position does not agree with the switch position,

the CROSSFEED switch VALVE light

Answer 28

illuminates

and the EICAS advisory message

FUEL CROSSFEED FWD or AFT displays.