Extinguished – related engine or spar fuel shutoff valve is open.
Illuminated (blue) –
Bright – related engine or spar fuel shutoff valve is in transit, or valve position and engine start lever or engine fire switch disagree
Dim – related engine or spar fuel shutoff valve is closed
FUEL Temperature (TEMP) Indicator
Indicates fuel temperature in No. 1 tank.
FILTER BYPASS Lights
Extinguished – fuel filter operating normally.
Illuminated (amber) – impending or actual fuel filter bypass due to a contaminated filter. If both lights are illuminated, both lights will remain illuminated until engine shutdown on the ground.
Crossfeed VALVE OPEN Light
Extinguished – crossfeed valve is closed.
Illuminated (blue) –
Bright – crossfeed valve is in transit, or valve position and CROSSFEED selector disagree
Open – connects engine No. 1 and No. 2 fuel feed lines.
Center Tank FUEL PUMP LOW PRESSURE Lights
Illuminated (amber) – fuel pump output pressure is low and FUEL PUMP switch is ON.
Note: With the Center (CTR) tank FUEL PUMP switches ON, continuous illumination of one LOW PRESSURE light for 10 seconds illuminates MASTER CAUTION and FUEL system annunciator lights.
Extinguished – fuel pump output pressure is normal, or FUEL PUMP switch is OFF.
FUEL PUMP Switches
ON – activates fuel pump.
OFF – deactivates fuel pump.
Note: When a center tank fuel pump switch is set to OFF, the auto shutoff logic for that pump is reset. When the center tank fuel pump switch is set to ON after being OFF, the pump will again activate until the switch is set to OFF or auto shutoff logic deactivates it.
Main Tank FUEL PUMP LOW PRESSURE Lights
Illuminated (amber) – fuel pump output pressure is low, or FUEL PUMP switch is OFF.
Note: Two LOW PRESSURE lights illuminated in same tank illuminate MASTER CAUTION and FUEL system annunciator lights. One LOW PRESSURE light causes MASTER CAUTION and FUEL system annunciator lights to illuminate on MASTER CAUTION light recall.
Extinguished – fuel pump output pressure is normal.
