77-CONTENTS
Page 2
D633W101-BEJ
Jan 05/2002
PW4000 SERIES ENGINES
777 AIRCRAFT MAINTENANCE MANUAL
THIS PAGE IS INTENTIONALLY LEFT BLANK
77-00-00
Page 1 D633W101-BEJ Sep 05/2002
ENGINE INDICATING -INTRODUCTION
Purpose
The engine indicating system supplies engine performance data to the AIMS to show on the primary display system. The indicating system has these subsystems:
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Engine pressure ratio (EPR)
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Tachometer (N1 and N2)
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Exhaust gas temperature (EGT)
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Airborne vibration monitoring (AVM)
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Airplane condition monitoring system (ACMS).
The ACMS data is available from the AIMS through the MAT.
Abbreviations and Acronyms
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AC -alternating current
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ACMS -airplane condition monitoring system
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AIMS -airplane information management system
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altn -alternate
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amb -ambient
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AOC -air to oil heat exchanger (cooler)
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ASCPC -air supply cabin pressure controller
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AVM -airborne vibration monitoring
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BB -broad band
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bld -bleed
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chan -channel
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EBS -engine balancing system
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EDIU -engine data interface unit
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EEC -electronic engine control
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EGT -exhaust gas temperature
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EICAS -engine indication and crew alerting system
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eng -engine
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EPCS -electronic propulsion control system
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EPR -engine pressure ratio
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FF -fuel flow
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FMV -fuel metering valve
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fwd -forward
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HPC -high pressure compressor
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HPT -high pressure turbine
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IDG -integrated drive generator
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LPC -low pressure compressor
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LPT -low pressure turbine
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MAT -maintenance access terminal
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MFD -multi-function display
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PMA -permanent magnet alternator
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press -pressure
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qty -quantity
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RCC -remote charge converter
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RPM -revolutions per minute
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SCU -signal conditioner unit
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