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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.
GX_appx_010
For Training Purposes Only
Sept 04
Appx-27
P I LOT T R A I N I N G GU I D E
GLOBAL 5000 DIFFERENCES
APPENDIX 1
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
(standard) or kilograms (optional). The primary EICAS page displays fuel quantity in
all fuel tanks, and total fuel in the airplane.
GX_appx_011
YD OFF
GLD MANU
PARK/EME
<– FUEL
TOTAL FUEL (LBS) 362OO
1.54
15O5O 61OO 15O5O
N2
FF (PPH)
OIL TEMP
OIL PRESS
93.4
575O
115
81
SPD
EPR
I
G
N
START START
I
G
N
ND
STAB
1.54
73.3
T/O
N1
SYNC
73.3
789
ITT
SYNC
789 DN D
G
–TR
NL
LWD
7.2
NU
93.4
575O
115
81
Fuel Flow Readout
Indicates fuel flow in pounds per
hour (PPH) to the respective
engine.
Fuel Quantity Readout
(Wing Tank)
Green
Amber
Indicates fuel quantity in the
respective wing tank, in
pounds (lbs).
• – Left and right tanks
are balanced.
• – A fuel quantity
imbalance exists.
Total Fuel Readout
Green
Amber
Indicates total fuel quantity in
pounds (lbs), of all the tanks.
• – Total fuel quantity is
valid and in normal range.
• – A fuel low quantity or
discrepancy exists.
Fuel Quantity Readout
(Center Fuselage Tank)
Green
Amber
Indicates fuel quantity in the
cente tank, in pounds (lbs).
• – Quantity is valid.
• – A fuel quantity
discrepancy exists.
r
EICAS PRIMARY DISPLAY
P I LOT T R A I N I N G GU I D E
GLOBAL 5000 DIFFERENCES
APPENDIX 1
Appx-28 For Training Purposes Only
Sept 04
FLIGHT MANAGEMENT DISPLAY
When both engines are started, the Flight Management System (FMS) fuel quantity
switches from Fuel Quantity Gauge System (FMQGC) to FMS computed fuel
quantity, based on fuel flow data from the engines and APU.
Fuel quantity information to the FMS is used for monitoring and sensing, to assist in
determining a fuel leak. When a fuel leak is detected, a crew alert (“MSG” on the
Primary Flight Display) will be displayed and a message will appear on the scratchpad
of the FMS CDU.
COMPARE FUEL QUANTITY
0DEPARTURE
0PERFORMANCE INIT–LB 5/5
0BOW
51000
PASS/@ LB0
5/170
0FUEL (GAUGE) PASS WT00
25000 (23900) 8500
0CARGO GROSS WT00
200 770500
CONFIRM INIT0
GX_appx_012
COMPARE FUEL QUANTITY
0DEPARTURE T.O.INIT0
000ACTIVE FLT PLAN 1/4
0BOW PASS/@ LB0
0/170
0055°00154NM
15820 (00+21
0K0P0H0X0001152Z
SJN
0059°00121NM
15820 (00+15 .75M/10000A
CLS
ABQ
0ORIGIN
.75M/10000A
CLS
COMPARE FUEL
QUANTITY
Displays when
the gauge fuel
weight and the
FMS fuel weight
differ by more
than 2% of the
Basic Operating
Weight (BOW).
For Training Purposes Only
Sept 04
Appx-29
P I LOT T R A I N I N G GU I D E
GLOBAL 5000 DIFFERENCES
APPENDIX 1
ENGINE FEED SYSTEM
Fuel is provided to each engine from the two AC boost pumps. In normal operation,
both boost pumps are continuously on, and provide all engine fuel flow once the
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