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Status Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.10.3
Hydraulic Synoptic Display . . . . . . . . . . . . . . . . . . . . . . . . . 13.10.4
Miscellaneous Hydraulic System Controls . . . . . . . . . . . . . . . . 13.10.5
Engine Fire Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.10.5
Flight Control Surface Lockout Switches . . . . . . . . . . . . . . . 13.10.6
System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.20.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.20.1
Left and Right Hydraulic Systems . . . . . . . . . . . . . . . . . . . . . . . 13.20.1
Left and Right Hydraulic System Primary Pumps . . . . . . . . 13.20.1
Left and Right Hydraulic System Demand Pumps . . . . . . . . 13.20.1
Center Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.20.2
Center Hydraulic System Electric Pumps . . . . . . . . . . . . . . . 13.20.2
Center Hydraulic System Non–Normal Operation . . . . . . . . 13.20.2
Ram Air Turbine (RAT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.20.3
Hydraulic Systems Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . 13.20.4
EICAS Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.30.1
Hydraulics, Ram Air Turbine EICAS Messages . . . . . . . . . . . . 13.30.1
787 Flight Crew Operations Manual
13.TOC.0.2 Boeing Proprietary
Hydraulics -
Table of Contents
Intentionally
Blank
787 Flight Crew Operations Manual
Hydraulics Chapter 13
Controls and Indicators Section 10
Boeing Proprietary 13.10.1
13.10 Hydraulics-Controls and IndicatorsHydraulic Panel
Push – deploys the RAT.
Illuminated (white) –
• the RAT is deployed
• center system primary flight control hydraulic pressure is greater than
3000 psi.
1 RAM AIR TURBINE Switch
2 Ram Air Turbine Pressure (PRESS) Light
OVERHEAD PANEL
RAM AIR
TURBINE
PRESS
UNLKD
HYDRAULIC
AUTO
L ELEC R ELEC
R ENG
ON
FAULT
L ENG
FAULT FAULT
FAULT FAULT
PRIMARY
PRIMARY
DEMAND
DEMAND
ON
C1 ELEC C2
OFF
AUTO
OFF ON
AUTO
OFF ON
AUTO
OFF ON
ON
FAULT
2
3
4
6
7
8
5
1
787 Flight Crew Operations Manual
Hydraulics -
Controls and Indicators
13.10.2 Boeing Proprietary
Illuminated (amber) – the RAT is not in the stowed position.
ON – the engine–driven hydraulic pump pressurizes the related left or right
hydraulic system when engine starts.
Off (ON not visible) – the engine–driven hydraulic pump is turned off and
depressurized.
ON – the pump runs continuously.
AUTO – Pumps alternate as a primary pump and a demand pump. The primary
pump operates continously and the demand pump operates during high system
demand.
OFF – the pump is off.
Illuminated (amber) –
• low primary pump pressure
• excessive primary pump fluid temperature, or
• pump selected OFF.
ON – the pump runs continuously.
AUTO – the pump operates when system and/or primary pump(s) pressure is low,
or when control logic anticipates a large system demand.
OFF – the pump is off.
Illuminated (amber) –
• low demand pump output pressure
• excessive demand pump fluid temperature, or
• demand pump is selected OFF.
Hydraulic System Indications
Hydraulic system indications are displayed by pushing the systems (SYS) display
switch on the display select panel, then selecting either the status (STAT) synoptic
key or the hydraulic (HYD) synoptic key. Display select panel operation is
described in Chapter 10, Flight Instruments, Displays.
3 Ram Air Turbine Unlocked (UNLKD) Light
4 Left/Right Engine (L/R ENG) PRIMARY Pump Switches
5 C1/C2 Electrical (C1/C2 ELEC) Pump Selectors
6 Primary Pump FAULT Lights
7 DEMAND Pump Selectors
8 Demand Pump FAULT Lights
787 Flight Crew Operations Manual
Hydraulics -
Controls and Indicators
Boeing Proprietary 13.10.3
Status Display
QTY –
• displays system reservoir quantity as a percentage of the normal service
level (1.00 is the normal service level)
• LO (amber) – displayed when the reservoir quantity is low
• OF (white) – displayed when the reservoir is over–full (inhibited in flight)
• RF (white) – displayed when the reservoir requires refilling (inhibited in
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