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go to the commanded
position.
• light – When the
switch is selected, the
crossfeed valve opens and
interconnects the engine
feed lines.
AUX PUMP Switch
• OFF light – Indicates that
the right auxiliary pump has
been disarmed. The left
AUX PUMP has similar
logic.
PRI PUMPS Switch
• OFF light – Indicates that
both left wing primary
pumps have been
disarmed. The right PRI
PUMPS switch has similar
logic.
GX_11_005
AFT XFER Switch
AUTO
ON
OFF
• selection – Provides a means of transferring
fuel from the aft tank to the wing tank. Controlled by
the FMQGC.
• selection – Provides a manual method of
controlling the transfer schedule.
• selection – Inhibits the forward transfer of fuel.
RECIRC Switch
(If installed)
• ON light – Indicates that
the FRTT valve is open
when commanded by flight
crew.
R RECIRC
INHIBIT
OFF
RECIRC Switch (If installed)
• OFF light – On AC equipped
with -9 FMQGC or later. Recirc
is an automatic ON feature and
the switches are used to inhibit
the system if required. The Left
Recirc Inhibit has a similar logic.
For Training Purposes Only
Sept 04
11-11
P I LOT T R A I N I N G GU I D E
FUEL SYSTEM
FUEL SYSTEM SYNOPTIC PAGE
The FUEL synoptic page provides an overview of system status, as represented below
with both left and right engines running and no transferring of fuel taking place.
FUEL SYNOPTIC PAGE
NOTE
For the remainder of this chapter, the synoptic page with
recirculation shown will be used as a default.
P P P
P
P P
P
P P
P
FUEL
AUX
–1O°C
APU
–1O°C
TOTAL FUEL
4355OLBS
15O5OLBS
AUX
1115OLBS
15O5OLBS
FUEL USED
OLBS
LO PRESS
32°C
23OOLBS
32°C
LO PRESS
P P P
P
P P
P
P P
P
FUEL
AUX
22°C
APU
22°C
TOTAL FUEL
4355OLBS
15O5OLBS
AUX
1115OLBS
15O5OLBS
FUEL USED
OLBS
LO PRESS
32°C
23OOLBS
32°C
LO PRESS
DC Auxiliary Pump
AC
Boost
Pumps
Aft
Transfer
Pump
Cente
Transfer
Pump
r
GX_11_006
Without Fuel Recirculation With Fuel Recirculation
P I LOT T R A I N I N G GU I D E
FUEL SYSTEM
11-12 For Training Purposes Only
Sept 04
EICAS PHILOSOPHY
The following represents the EICAS symbols and flow line logic for the fuel synoptic
page. The symbols are shown in serviceable and failure conditions.
VALVE AND FLOW LINE LOGIC
PUMP AND FLOW LINE LOGIC
DIRECTION OF FLOW
DIRECTION OF FLOW
VALVE
NOT FAILED
OPEN
CLOSED
TRANSIT
OFF
PUMP
FAILED
ON
INVALID
ON
PUMP
FAILED
OFF
INVALID
VALVE
FAILED
P
P
P
P
P
GX_11_007
For Training Purposes Only
Sept 04
11-13
P I LOT T R A I N I N G GU I D E
FUEL SYSTEM
FUEL SHUTOFF VALVE DISPLAYS
P P P
P
P P
P
P P
P
FUEL
AUX
23°C
APU
23°C
TOTAL FUEL
1O6OOLBS
48OOLBS
AUX
OLBS
4OOOLBS
FUEL USED
32OOOLBS
LO PRESS
32°C
18OOLBS
32°C
LO PRESS
WING Transfer SOV
Controlled by the FMQGC or the
WING XFER switch on the fuel
control panel.
Engine Feed
Shutoff Valve
.
NOTE
• Applicable engine FIRE
DISCH handle
: The engine run
switches activate the
HPSOV located in the
FMU not these shut-off
valves. These are only
activated by the “FIRE
DISCH” handle.
Fuel Crossfeed SOV
Controlled by the
switch on the Fuel
Control Panel. It is
used to interconnect
the engine feed lines.
AFT Tank Transfer Valve
Controlled by the FMQGC
or the AFT XFER switch
on the fuel control panel.
APU Feed Shutoff Valve
• Activated by the RUN
position switch on the
APU control panel.
• Also controlled by the
APU FIRE DISCH
handle.
GX_11_008
P I LOT T R A I N I N G GU I D E
FUEL SYSTEM
11-14 For Training Purposes Only
Sept 04
FUEL FILTER, QUANTITY AND TEMPERATURE READOUT
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