Fuel Quantity Indicating System - Component Index
Figure 101 (Sheet 5)
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A
747-400 FAULT ISOLATION/MAINT MANUAL
SEE
SHT 2
SEE
SHT 6
Fuel Quantity Indicating System - Component Location
Figure 102 (Sheet 1)
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A
747-400 FAULT ISOLATION/MAINT MANUAL
INPUT/OUTPUT AND
INDIVIDUAL FUEL
QUANTITY CHANNEL
CARDS
ACCESS DOOR 125B SEE C
FUEL QUANTITY
PROCESSOR UNIT
WINDOW
SEE B
E6 RACK
FWD
FUEL QUANTITY PROCESSOR UNIT, M7860
A FROM SHT 1 COVER
INDIVIDUAL FUEL
QUANTITY CHANNEL INPUT/OUTPUT CARDS FWD CARDS
FUEL QUANTITY PROCESSOR UNIT, M7860
B
LED INDICATOR LIGHT
(REF)
FRONT COVER (REF)
INPUT/OUTPUT AND INDIVIDUAL FUEL QUANTITY CHANNEL CARDS
C
Fuel Quantity Indicating System - Component Location
Figure 102 (Sheet 2)
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A
747-400 FAULT ISOLATION/MAINT MANUAL
FUELING QUANTITY INDICATORS, N302 THRU N306
SEE E
FUELING QUANTITY INDICATORS, P42 PANEL
D FROM SHT 1
TEST POWER
VALVE POSITION/CONTROL (MANUAL)
GAGES SYS OVERFILL
BATT OPEN
CLOSED RL IO NORM
CENTER MAIN 2 MAIN 1 RESERVE 2
RESET TOTAL FUEL
156.2 45.0 38.0 13.6 4.0
ACTUAL PRESELECT
38.0 13.6 4.0 TOTAL CTR
OPEN SELECT QTY MAIN 3 MAIN 4 RESERVE 3
PRESELECT CONTROL ALL VALVES CLOSED 1 236 QTY x 1000 I O OPEN CLOSED
FUELING QUANTITY INDICATOR (6 LOCATIONS)
FUELING QUANTITY INDICATORS, N302 THRU N306
E
Fuel Quantity Indicating System - Component Location Figure 102 (Sheet 3)
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747-400 FAULT ISOLATION/MAINT MANUAL
FUEL QUANTITY TANK UNIT, F123
FUEL QUANTITY DENSITOMETER, M7875
SEE
SHT 11
FUEL QUANTITY TANK UNIT, F125 FUEL QUANTITY TANK UNIT (EXAMPLE), F121
SEE
SHT 11 FUEL QUANTITY TANK UNIT, F122
FUEL QUANTITY COMPENSATOR, F120
SEE
SHT 11
FUEL QUANTITY TANK UNIT, F124
CENTER WING TANK COMPONENTS