747 Flight Crew Operations Manual
Hydraulics – Controls and Indicators
Hydraulic System Indications To view the status display, push the STAT display switch on the display select panel. To view the hydraulic synoptic, push the HYD synoptic display switch on the display select panel. Display select panel operation is described in Chapter 10, Flight Instruments, Displays. Status Display
HYD QTY HYD PR HYD TEMP
2 1 100 075 3000 3000 50
3 095 950 50 50
4 034 3000 108
SECONDARY EICAS DISPLAY
1 Hydraulic Fluid Quantity (HYD QTY)
Hydraulic reservoir quantity of each system displays as a percentage of the normal service level (1.00).
2 Hydraulic System Pressure (HYD PR)
Hydraulic pressure of each system displays in psi.
3 Hydraulic System Temperature (HYD TEMP)
Hydraulic fluid temperature of each system displays in degrees C.
4 Reservoir Refill
RF (Refill) (magenta) – displays on ground when reservoir requires refill.
5 Low Reservoir Quantity
LO (magenta) – displays when a reservoir quantity is low.
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July 15, 2008