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• Verify all tank quantities stop increasing to confirm the refuel valves have closed
• Verify the PRESEL window displays SOV STOP alternating with the preselected
value and does not display SOV FAIL
• Release the SHUTOFF TEST switch and verify tank quantities resume showing
increase with the preselected quantity showing steady in the PRESEL window
• The FMQGC shall control the fueling sequence automatically within the required
loading sequence
• When all tank quantities stop registering an increase, verify that the displays in the
TOTAL and the PRESEL window are the same and no error message is displayed
in any of the windows. Each tank window should display the quantity in it as
distributed by the FMQGC in the automatic mode and should add up to the
TOTAL displayed
• Disconnect the tender as required and return the RDCP MASTER switch to the
OFF position
• Secure RDCP access panel
MANUAL REFUELING
In “manual” mode, it permits the operator to select and control the fuel quantity to be
added in each tank through the refuel/defuel panel. In this mode, the high level sensors
automatically close the refuel/defuel SOVs, if the maximum fuel level capacity is
reached.
MANUAL REFUEL
The procedure for manual refuel is as follows:
• Open the RDCP access panel
• Place the MASTER switch in the ON position
• Allow the FMQGC to conduct BITE test until tank quantities are displayed steady
in all windows
NOTE
If a system fault is detected, the windows will display dashed
lines or error message(s) in the individual tank windows instead
of quantities. Do not proceed without investigating and rectifying
fault.
P I LOT T R A I N I N G GU I D E
FUEL SYSTEM
11-38 For Training Purposes Only
Sept 04
• Verify no error messages are displayed in any of the individual tank quantity
windows
• Verify all MANUAL tank switches are in the CLOSE position
• Verify MODE SELECTOR switch is in the mid position marked AUTO REFUEL
• Note the quantities in the TOTAL and PRESEL windows. They should be the
same
• Move the MODE SELECTOR switch up to the position marked MANUAL
REFUEL
• Verify the PRESEL window displays the message MANUAL instead of quantity
• Connect the refuel tender to the single point adapter and adjust the tender pressure
as desired but not to exceed 50 psig
• Select the desired tank MANUAL switches to the OPEN position
• Verify that the selected tank quantities show increase
• Place the spring loaded SHUTOFF TEST switch in the TEST position and hold it
• Verify the PRESEL window displays SOV TEST
• Verify all tank quantities stop increasing to confirm the refuel valves have closed
• Verify the PRESEL window displays SOV STOP alternating with MANUAL and
does not display SOV FAIL
• Release the SHUTOFF TEST switch and verify tank quantities resume showing
increase with MANUAL showing steady in the PRESEL window
• When the desired fuel quantity for the selected tank is displayed on the tank
window, return the MANUAL switch to the CLOSE position to terminate the
fueling operation
• Return the MODE SELECTOR switch to AUTO REFUEL
• Disconnect the tender as required and return the RDCP MASTER switch to the
OFF position
• Secure RDCP access panel
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.
Gravity fueling of the aft tank is not possible therefore; no fill adapter is provided.
For Training Purposes Only
Sept 04
11-39
P I LOT T R A I N I N G GU I D E
FUEL SYSTEM
SUCTION DEFUELING
Suction defueling of the fuel tanks is carried out by applying suction (recommended
pressure of -8 psig) to the single point refuel/defuel adapter, using the refuel/defuel
control panel.
WING TANK
Suction defueling of the wing tanks is accomplished by opening a valve which
connects the refuel/defuel manifold to the engine feed line. This allows fuel to be
drawn out of the tank through the suction defuel check valve in the feed tank.
CENTER TANK
The center tank is defueled through the refuel/defuel shutoff valve.
AFT TANK
The aft tank may be suction defueled, using the same line and shutoff valve used for
　
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