TM 1-1520-238-T-7
Change 5
10–29
10–6.
CONTROLS AND INDICATORS (cont)
10–6
Table 10–1.
Fuel System Controls and Indicators (cont)
Pilot BTL DISCHARGE/APU Panel
SWITCH/INDICATOR
POSITION
FUNCTION
APU FIRE PULL Handle
Pull to close APU fuel shutoff valve.
M70-283A
APU FIRE
PULL HANDLE
Pilot BTL DISCHARGE/APU Panel
Caution/Warning Panels
SWITCH/INDICATOR
POSITION
FUNCTION
EXT EMP indicator (pilot)
AMBER
Lights when all external tanks are empty.
(ADA) FUEL XFR (pilot) (ADB)
FUEL XFER (CPG) FUEL XFR
(CPG) indicators
AMBER
Lights when failure of fuel transfer with TRANS switch set
to TO FWD or TO AFT.
(ADB) FUEL XFR indicator
GREEN
Lights when FUEL TRANS switch is set to TO FWD or
TO AFT and fuel transfer occurs.
BOOST PMP ON indicator (pilot)
AMBER
Lights when boost pump is operating and is providing 8 to
10 psi in fuel line to fuel filter.
REFUEL VALVE OPEN indicator
(pilot)
AMBER
Lights when refuel valve is open.
FUEL LOW AFT indicator
AMBER
Lights when 210 to 270 lbs. of fuel remains in aft fuel cell
at cruise attitude.
FUEL LOW FWD indicator
AMBER
Lights when 260 to 300 lbs. of fuel remains in forward fuel
cell at cruise attitude.
(ADB) XFEED indicator
GREEN
Lights when crossfeed is selected and both engine fuel
valves are correctly positioned.
(ADB) XFEED indicator
AMBER
Lights when one or both engine fuel valves are closed or
crossfeed is selected and both valves are incorrectly
positioned.
