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P P P
P
P P
P
P P
P
FUEL
AUX
23°C
APU
23°C
TOTAL FUEL
431OOLBS
149OOLBS
AUX
11OOOLBS
149OOLBS
FUEL USED
2OOLBS
LO PRESS
32°C
22OOLBS
32°C
LO PRESS
Wing Fuel Quantity
Indicates fuel quantity, in the
respective wing tank, in
pounds (lbs).
Total Fuel Quantity
Indicates fuel quantity, in all
fuel tanks, in pounds (lbs).
Fuel Used Quantity Readout
Indicates fuel quantity burned.
Fuel Quantity Readout
(Aft Tank)
Indicates fuel quantity in the
aft tank, in pounds (lbs).
Fuel Quantity Readout
(Center Fuselage Tank)
Indicates fuel quantity, in the
center tank, in pounds (lbs).
Engine Inlet Fuel
Temperature
• Green
• Amber
– Engine fuel
temperature is 5°C.
– Engine fuel
temperature is < 5°C.
>
Fuel Filter Flow Line
Green
Amber
• – Indicates normal
fuel flow to the engine.
• – Fuel pressure
drop exists across the filter,
flow line from the filter to
the engine turns amber.
GX_11_009
Bulk Fuel Temperature
Readout
Prior to -9 FMQGC
• Green
• Amber
Fuel Recirculation
system is ON:
• Green
• Amber
– Temperature of
fuel in tanks is between
-35°C and +43°C.
– Temperature
of fuel in tanks is lower
than -35°C or greater
than +43°C.
– Temperature of
fuel in tanks is between
-35°C and 0°C.
– Temperature
of fuel in tanks is lower
than -35°C or greater
than 0°C.
Bulk Fuel Temperature
Readout
-9 FMQGC or later
• Green
• Amber
Fuel Recirculation
system is ON:
• Green
• Amber
– Temperature of
fuel in tanks is between
-35°C and +54°C.
– Temperature
of fuel in tanks is lower
than -35°C or greater
than +54°C.
– Temperature of
fuel in tanks is between
-35°C and 10°C.
– Temperature
of fuel in tanks is lower
than -35°C or greater
than 10°C.
For Training Purposes Only
Sept 04
11-15
P I LOT T R A I N I N G GU I D E
FUEL SYSTEM
FUEL PUMP DISPLAYS
P P P
P
P
P
FUEL
AUX
23°C
23°C
TOTAL FUEL
37OOOLBS
136OOLBS
AUX
8OOOLBS
132OOLBS
FUEL USED
56OOLBS
P P
P P
APU
LO PRESS
32°C
22OOLBS
32°C
LO PRESS
L or R DC Auxiliary Pumps
ON
NOTE
OFF
• – For takeoff and landing, primary pump
failure, and wing transfer of fuel.
: The AUX PUMP cannot be used to support
the engine feed system and wing transfer at the
same time. In auto, engine feed will have priority
over wing transfer. Manual overide is always
possible.
• – When commanded by the switch on the
Fuel Control Panel.
– When both primary pumps are on and no wing
transfer is required.
Center Transfer Pumps
Controlled by the FMQGC and
transfers center tank fuel to the
wing tanks. No manual control.
L or R AC Boost Pumps
ON
OFF
• – At all times with the engines
running.
• – When commanded by the
switch on the Fuel Control Panel.
AFT Transfer Pumps
ON
OFF
• – When requested by the
computer or selected on the Fuel
Control Panel.
• – When commanded by the
switch on the Fuel Control Panel.
– When commanded by the FMQGC
in AUTO mode.
GX_11_010
P I LOT T R A I N I N G GU I D E
FUEL SYSTEM
11-16 For Training Purposes Only
Sept 04
FUEL QUANTITY AND INDICATION
The fuel quantity gauging system is an ac-type capacitance system. Fuel quantity
probes, compensators, densitometers, temperature sensors and high level detectors are
inputs received by the FMQGC. The FMQGC uses this acquired data to compute the
fuel quantity for each tank and total fuel quantity remaining on board the airplane.
The FMQGC outputs the computed individual fuel tank, total quantity and fuel
temperature for EICAS display. The fuel system computer corrects for airplane pitch
attitude and presents the corrected information of individual tank quantities, and total
fuel quantity displayed on EICAS. The FMQGC can display quantity in either pounds
　
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