MD-11 Flight Crew Operations Manual
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Fuel -
Controls and Displays
Fuel.30.9
4. Valves
Closed valves are shown as white circles with lines perpendicular to the fuel
line. Open valves are shown as green circles with lines parallel to the fuel line.
If a transfer valve does not go to commanded position within 5 seconds,
DISAG appears over the valve. The valve will be displayed in the
commanded position. There is no fuel dump valve symbology on the FUEL
synoptic unless the DUMP switch is on or either dump valve is in disagree.
5. Fill Valve
Fill valves are shown as spigots. These spigots and associated lines are green
when open, white when armed, and not shown when off.
6. Fuel Pump
Pumps are shown as white circles when off. When on, pumps are shown as
green circles with vanes. If pressure is low, the pump is displayed in amber
with a small P shown adjacent to the amber pump.
7. Main Tank Quantity Readouts (3)
The fuel quantity in each main tank is indicated by the level of white shading.
Total fuel quantity is also displayed digitally within each tank symbol. Unit
of measurement is kilograms. If fuel is transferred from tip of tank 1 or 3 too
early, TIP LOW will appear adjacent to the appropriate tank. If fuel is trapped
in the tank, TIP XXX will appear in amber adjacent to the tank, where XXX
is the quantity trapped.
8. Tail Tank Quantity Readout
The total fuel quantity in the tail tank is indicated by the level of gray shading.
Total fuel quantity is also displayed digitally within the tank symbol. Unit of
measurement is kilograms.
9. Fuel Temperature Readout
Fuel temperature is displayed for the tail tank and right wing tank. Digits are
normally white but become amber and boxed in amber when the fuel
temperature drops below the limit temperature.
10. Aux Tanks Quantity Readout
The upper and lower aux tank quantities are indicated by the level of gray
shading. The total quantity of both upper and lower aux tanks is shown
digitally in the upper aux tank symbol. Unit of measurement is kilograms.
11. Center of Gravity Readout
Center of gravity is displayed digitally in top left corner. Digits are normally
white but are boxed and turn amber if the CG goes out of limits. If no valid
CG data is available the digits are replaced by an amber X.
October 02, 2006
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