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COMPARE FUEL QUANT
CLS
850
PASS WT
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.
FUEL
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
12−10−15
REFUEL/DEFUEL SYSTEM
Pressure refueling/defueling operations are controlled from the refuel/defuel control panel. Pressure
refueling can be accomplished in MANUAL or AUTO mode of operation.
FGF1210_015
GRAVITY FILL CAP
GROUNDING
POINTS
GROUNDING
POINT
REFUEL/DEFUEL
ACCESS PANEL
PROXIMITY
SENSOR
GROUNDING
POINT
REFUEL/DEFUEL
PANEL LOCATION
CLOSE
OPEN
REFUEL/DEFUEL PANEL
LEFT CENTER RIGHT
TOTAL PRESEL
MANUAL
LEFT CTR RIGHT
OPEN
CLOSE
INCR
DECR
PRESEL
START
STOP/
SOV
TEST
REFUEL
DEFUEL
AUTO
OFF
MANUAL
REFUEL
Gravity filling via a filler point is also provided for the wing and center wing tanks.
FUEL
Flight Crew Operating Manual Rev 2A, Apr 11, 2005
CSP 700−5000−6
Volume 2
12−10−16
REFUEL/DEFUEL PANEL
FGF1210_016
PRESELECT TOTAL
QTY DISPLAY
Displays the fuel
quantity target for
automatic refueling. Set
in 100 lb (50 KG)
increments.
LEFT/RIGHT/CTR/TOTAL
Displays the current fuel
quantity in each tank and the
total quantity in all tanks.
Quantities are displayed in 50 lb
(25 KG) increments.
PRESEL INCR/DECR
Increases or decreases
the preselect quantity for
AUTO refueling.
FUEL SOVs
Allows tanks to be
refueled or defueled
manually.
MODE SELECTOR
MANUAL REFUEL −
Enables manual refueling
using the fuel SOVs.
MANUAL DEFUEL−
Enables manual defueling
using the fuel SOVs.
AUTO MODE
AUTO REFUEL − Enables
automatic refueling.
OFF POSITION
OFF − Removes
power form the panel.
START−STOP/SOV TEST
START − Initiates refueling.
STOP/SOV TEST − Stops
automatic refueling or enables
testing of the refuel SOVs and
circuitry during fueling.
REFUEL/DEFUEL PANEL
LEFT CENTER RIGHT
TOTAL PRESEL
MANUAL
LEFT CTR RIGHT
OPEN
CLOSE
INCR
DECR
PRESEL
START
STOP/
SOV
TEST
REFUEL
DEFUEL
AUTO
OFF
MANUAL
REFUEL
FUEL
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
12−10−17
REFUEL/DEFUEL PANEL (CONT'D)
Normal Fuel Loading
The normal fuel loading logic as planned by the FMQGC is as follows:
· Wing tanks only if the required fuel load is equal to or less than the wing tank capacity.
· Any fuel in excess of the wing tank capacity is placed in the center tank.
NOTE
The fuel computer always strives to keep between 0 and 400 lb
maximum lateral imbalance, however, the software allows the
imbalance to reach 1100 lb before shutting down and going into
INHIB mode.
Gravity Refueling
The wing tanks may be refueled through over wing gravity fill adapters located on top of both left
and right wings. It is not possible to completely fill either wing tank by gravity fueling, since the fill
adapters are located outboard and below the maximum fuel level.
The center tank may be refueled through a gravity fill adapter located on top of the right hand
wing.
Pressure Refueling
Pressure refueling is accomplished through the single point refuel/defuel adapter, located in the
right hand wing root and is controlled by the refuel/defuel control panel. An optional duplicate
refuel/defuel control panel can be installed in the flight compartment.
NOTE
A SHUTOFF TEST must be carried out prior to all refueling
operations.
If the test is successful a SOV PASS is displayed in the PRESEL window. If the test fails a SOV
FAIL is displayed in the PRESEL window. SOV FAIL will be displayed in the tank window for the
failed shutoff valve, alternating display of the tank quantity.
Pressure refueling may be performed in either AUTOMATIC or MANUAL mode. The airplane does
not have a fuel jettison system.
A preselect fuel quantity is used during automatic refueling of the airplane. This method will allow
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