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Pressure Readout
Displays pressure in the
outboard brake system.
NORM Green −
> 1400 to 3200 psi.
LO PRESS Amber −
< 1400 psi.
White − > 3200 psi.
Reservoir Output Lines
(all 3 systems)
Flow line is green when
sufficient reservoir quantity is
displayed.
GF1310_025
70°C 68°C 70°C
HYDRAULIC
1B 3A 3B 2B
INBD
BRAKE
2900
PSI
OUTBD
BRAKE
NORM
PSI PSI PSI
2950 3000 2950
RUD
ELEV R
AIL R
FLT SPLRS
GEAR
REVERSER R
RUD
L ELEV R
L AIL R
GND SPLRS
GEAR
NOSE STEER
RUD
L ELEV
L AIL
FLT SPLRS
GND SPLRS
L REVERSER
PARK/EMER BRAKE
1A 2A
62 % 64 % 62 %
HYDRAULICS
Flight Crew Operating Manual REV 41, Jul 08, 2004
CSP 700−6
Volume 2
13−10−24
HYDRAULIC SYNOPTIC PAGE (CONT'D)
Hydraulic Pressure Readout
Displays hydraulic pressure in the
corresponding system in increments
Normal operating pressure is 2950 to
3050 psi.
White − Hydraulic pressure
> 3200 psi.
Green − Hydraulic pressure
>1800 psi and < 3200 psi.
Amber − Hydraulic pressure
< 1800 psi.
System Distribution Table
Displays status of
corresponding airplane
systems powered by
system 1, 2 or 3.
White − Adequate pressure
>1800 psi to operate.
Amber − Hydraulic supply to
system inoperative < 1800 psi.
Fluid Quantity
Symbol and Readout
Displays increments of
2% reservoir fluid
quantity in the
corresponding system.
Hydraulic Fluid Temperature
Readout
Displays increments of 2°C
reservoir fluid temperature in
the corresponding system.
Green < 96°C (205°F).
Amber > 96°C (205°F).
Hydraulic Shutoff
Valve Position
Indicator
Displays valve open,
closed and invalid
data.
Shutoff Valve To
Engine Flow Line
The flow line from the fire
wall SOV to the engine
will display red if the
SOV fails to close, when
the fire handle is pulled.
GF1310_026a
70°C 68°C 70°C
HYDRAULIC
1B 3A 3B 2B
INBD
BRAKES
2900
PSI
OUTBD
BRAKES
NORM
PSI PSI PSI
2950 3000 2950
RUD
ELEV R
AIL R
FLT SPLRS
GEAR
REVERSER R
RUD
L ELEV R
L AIL R
GND SPLRS
GEAR
NOSE STEER
RUD
L ELEV
L AIL
FLT SPLRS
GND SPLRS
L REVERSER
PARK/EMER BRAKE
1A 2A
62 % 64 % 62 %
of 50 psi.
HYDRAULICS
REV 51, Aug 14, 2006 Flight Crew Operating Manual
CSP 700−6
Volume 2
13−10−25
HYDRAULIC SYNOPTIC PAGE SYMBOLS
The following represents the EICAS symbols and flow line logic for the hydraulic synoptic page. The
symbols are shown in serviceable and failure conditions.
EICAS Philosophy
VALVE AND FLOW LINE LOGIC
OPEN
VALVE
NOT FAILED
CLOSED
TRANSIT
INVALID
VALVE
FAILED
DIRECTION OF FLOW
VALVE FAILED
FIRE HANDLE PULLED
PUMP AND FLOW LINE LOGIC
ON
PUMP
INVALID
OFF
FAILED
OFF
PUMP
FAILED
ON
P
P
P
P
P
DIRECTION OF FLOW
VALVE FAILED TRANSIT
FIRE HANDLE PULLED
GF1310_027
HYDRAULICS
Flight Crew Operating Manual REV 41, Jul 08, 2004
CSP 700−6
Volume 2
13−10−26
EICAS MESSAGES
HYD 1 (2)(3) HI TEMP
Indicates that the
corresponding system fluid
temperature is > 96°C.
HYD 1 (2)(3)
LO PRESS
Indicates that the
corresponding system
pumps (both) in each
system have a low
pressure output
(<1800 psi).
HYD 3 OVERFILLED
Indicates that system 3
quantity is more than
70% with the system
pressurized on the
ground.
HYD 1 (2)(3) LO QTY
Indicates that the
corresponding system
is at the lower quantity
limit.
HYD RAT PUMP FAIL
Indicates that the RAT
pump has a low output
pressure (< 1800 psi).
L (R) HYD SOV FAIL
Indicates that the
hydraulic shutoff on
the affected side did not
go to its commanded
position (open or
closed).
GF1310_028a
HYD 1 LO PRESS
HYD 2 LO PRESS
HYD 3 LO PRESS
HYD 1 HI TEMP
HYD 2 HI TEMP
HYD 3 HI TEMP
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