MD-11 Flight Crew Operations Manual
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Fuel -
Description and Operation
Fuel.10.20
The FSC will monitor itself and other components for correct operation. A large
number of system components are continually monitored. If any fail to operate
properly, the FSC can, in many cases, use alternate means to accomplish the
desired action.
The FSC will detect and report faults to the CFDS.
Manual Reversion
The FSC will revert to manual for certain failure modes. The FSC is unable to
accommodate certain component failure modes and conditions. When these occur,
the FSC will revert to the manual mode and the flight crew will be notified with
an alert.
The FSC establishes the following fuel system configuration when it reverts to
manual mode:
• Tank 1, 2, and 3 pumps on.
• Fill valves remain in previous state.
• Crossfeed valves commanded closed.
• Tank 1 and 3 transfer pumps off.
• Tank 2 transfer pump remains in previous state.
• Aux tank L and R trans pumps on.
• Tail tank trans pump on.
• Tail tank alt pump off.
EIS Test Display
All FUEL synoptic data digits will be crossed out with amber Xs when all of the
conditions are met as follows:
• The aircraft is on the ground.
• The aircraft is operational.
• The ANNUN LT TEST button on the forward overhead panel is pushed.
• The FUEL synoptic has been selected to appear on the SD.
November 10, 2008
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