MD-11 Flight Crew Operations Manual
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Engines Chapter Eng
Controls and Displays Section 30
Eng.30.1
Eng.30 Engines-Controls and Displays
ENG START Switches and FUEL Switches
1. ENG START Switch (3) - amber
Pulling this switch will:
• Energize a coil that holds the switch out.
• Energize the engine starter valve open.
• Illuminate the switch amber.
• Supply power to the FADEC computer.
At about 45-52 percent the ENG START switch will pop in and the light will
extinguish indicating that the starter air valve has closed. The MSC controls
the start sequence. This switch cannot illuminate until the appropriate
electrical bus is powered.
2. FUEL Switch (3) - red
This switch supplies electrical power to a fuel metering device. The fuel
metering device then operates the fuel shutoff valve. This switch illuminates
red during engine fire and ENG/APU FIRE test. Moving the switch to the ON
initiates ignition and fuel if the ENG START switch is out and the ENG IGN
switch is selected A or B. The FSC automatically turns on the fuel pumps in
tanks 1, 2, or 3 when the respective ENG START switch or FUEL switch is
moved to ON.
DB1-2-1721
1
2
ENG START
2
3
ON
ON
ON
OFF
OFF
OFF
FUEL
1
FORWARD PEDESTAL
October 02, 2006
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