*
Fuel temperature and minimum fuel temperature
*
Cross feed valve position
*
Flow indications
*
Fuel jettison.
APU Pump Status
The APU dc pump status shows as:
*
Pump on (green)
*
Pump off (white)
*
Pump invalid (white).
ENG Pumps Status
The ENG ac pumps status show as:
*
Pump on (green)
*
Pump off (white)
*
Pump invalid (white)
*
Pump failed (amber with an X).
EFFECTIVITY
BEJ ALL
Total Fuel, Fuel Quantities, and Fuel Temperatures
The fuel synoptic shows this fuel information in the same way as the information on the EICAS display.
The legends are cyan and the readouts are white. For invalid or fail conditions, the readouts go away.
Fuel Balanced Message
A FUEL BALANCED message shows below total fuel when the left and right tanks disagree.
Cross Feed Valve Position
The valves show as one of these conditions:
*
Open
*
Closed
*
Failed open
*
Failed closed
*
Invalid.
Flow Indications
Automatic overrides and pressures cause fuel flow segments to show. Normal flow indications are green. When the engines use fuel with the pumps off, the flow indications are amber.
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PRIMARY DISPLAY SYSTEM -FUEL SYNOPTIC
Fuel Jettison
During a fuel jettison condition, the fuel synoptic shows more information. The flow indications are magenta. The jettison pumps show. Fuel to remain and fuel jettison time also show.
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PRIMARY DISPLAY SYSTEM -FUEL SYNOPTIC
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PRIMARY DISPLAY SYSTEM -AIR SYNOPTIC
General
The air synoptic shows this information:
*
Master temperature
*
Zone temperature
*
Flight deck trim valve position
*
Bleed isolation valve status
*
Anti-ice valve positions
*
APU isolation valve status
*
Engine bleed valve status
*
Engine start valve status
*
Pack status
*
Duct pressure and ground air supply
*
APU running status
*
Air flow indications.
Temperatures
The master temperature shows as a magenta digital readout. Zone temperatures, target and actual, also show as magenta and white digital readouts.
Target and actual zone temperatures show for these areas:
*
Flight deck
*
Zones A through F
*
Aft cargo
*
Bulk cargo.
The target temperature is magenta. The actual temperature is white.
Valves
The trim valves show in several possible conditions.
An open valve is green with a horizontal bar. A closed valve is white with a vertical bar.
A failed open valve is amber with an X. A failed closed valve is amber with an X.
Pack Status
Pack status shows as a symbol. The symbol is green for a pack on condition. The symbol is white for a pack off or invalid condition. The symbol is amber with an X for a failed pack condition.
Duct Pressure and Ground Air Supply
Duct pressure shows as a digital readout.
The air source, either ground-air or an air-driven pump, shows as a cyan message.
APU Status
The APU symbol is green when the APU is running. The APU symbol is white when the APU is not running.
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777 AIRCRAFT MAINTENANCE MANUAL
PRIMARY DISPLAY SYSTEM -AIR SYNOPTIC
EFFECTIVITY BEJ ALL 31-61-00
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PRIMARY DISPLAY SYSTEM -HYDRAULIC SYNOPTIC
General
The hydraulic synoptic shows this information:
*
User systems
*
Flow indications
*
Pump status
*
Valve information
*
Reservoir quantity and status
*
System pressure.
User Systems
The systems that use hydraulic power show at the top of the display.
Flow Segments
Flow segments are green. Pressure causes a segment to show.
Pump Status
A pump on symbol is green. A pump off symbol is white. A pump invalid symbol is white. A pump failed symbol is amber with an X.
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