The Engine Indicating and Crew Alerting System (EICAS)
An
engine-indicating and crew-alerting system
(
EICAS
) is an integrated system used in modern aircraft to
provide aircraft crew with aircraft engines and other systems
instrumentation and crew annunciations.
EICAS typically includes instrumentation of various engine
parameters, including for example revolutions per minute,
temperature values, fuel flow and quantity, oil pressure etc.
Typical other aircraft systems monitored by EICAS are for
example hydraulic, pneumatic, electrical, deicing,
environmental and control surface systems. EICAS has high
connectivity & provides data acquisition and routing.
EICAS is a key function of a glass cockpit system, which
replaces all analog gauges with software-driven electronic
displays.
Most of the display area is used for navigation and
orientation displays, but one display or a section of a
display is set aside specifically for EICAS.
The crew-alerting system (CAS) is used in place of the
annunciator panel on older systems.
Rather than signaling a system failure by turning on a
light behind a translucent button, failures are shown as a
list of messages in a small window near the other EICAS
indications.
EICAS categorizes displays and alerts according to function
and usage into modes:
Operational
: Engine operating information and any alerts
required to be actioned by the crew in flight. Only upper
display presents information.
Status:
Provides details about the readiness of the aircraft
Maintenance
: Trouble-shooting and verification testing of
the major sub-systems
EICAS distinguishes 7 colors:
White
: all scales, normal operating range of
pointers, digital readouts
Red
: warning messages, maximum operating
limit marks, digital readouts
Green
: thrust mode readout, selected
EPR/N1(Engine Pressure Ratio/N1 compressor)
speed marks or target cursors
Blue
: testing of the system only
Yellow
: caution and advisory messages, caution
limit marks on scales, digital readouts
Magenta
: during in-flight engine starting
Cyan
: names of all parameters being measured
and status marks
Level A
warnings requiring immediate correction activity
Level B
cautions requiring immediate crew awareness and
possible activity
Level C
advisories requiring crew awareness
An Engine Indicating and Crew Alerting System (EICAS) is an integrated system used in modern aircraft to provide crucial data on engine parameters and other systems to the crew. EICAS, a key feature of glass cockpit systems, categorizes displays and alerts into operational, status, and maintenance modes. It uses color-coding to convey warnings, cautions, and advisories, with distinct levels of urgency for crew response.
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Presentation Transcript
ENGINE INDICATING AND CREW ALERTING SYSTEM (EICAS)
An (EICAS) is an integrated system used in modern aircraft to provide aircraft crew with aircraft engines and other systems instrumentationand crew annunciations. EICAS typically includes instrumentation of various engine parameters, including for example revolutions per minute, temperaturevalues, fuel flowand quantity, oil pressureetc. Typical other aircraft systems monitored by EICAS are for example hydraulic, pneumatic, environmental and control surface systems. EICAS has high connectivity & providesdataacquisitionand routing. engine-indicating and crew-alerting system electrical, deicing,
EICAS is a key function of a glass cockpit system, which replaces all analog gauges with software-driven electronic displays. Most of the display area is used for navigation and orientation displays, but one display or a section of a display is setaside specifically for EICAS. The crew-alerting system (CAS) is used in place of the annunciatorpanel on oldersystems. Rather than signaling a system failure by turning on a light behind a translucent button, failures are shown as a list of messages in a small window near the other EICAS indications.
EICAS categorizes displays and alerts according to function and usage into modes: Operational: Engine operating information and any alerts required to be actioned by the crew in flight. Only upper display presents information. Status: Providesdetails about the readiness of the aircraft Maintenance: Trouble-shooting and verification testing of the majorsub-systems
EICAS distinguishes 7 colors: White: all scales, normal operating range of pointers, digital readouts Red: warning messages, maximum operating limit marks, digital readouts Green: thrust mode EPR/N1(Engine Pressure Ratio/N1 compressor) speed marks or target cursors Blue: testing of the system only Yellow: caution and advisory messages, caution limit markson scales, digital readouts Magenta: during in-flightengine starting Cyan: names of all parameters being measured and status marks readout, selected
Level A warnings requiring immediate correction activity Level B cautions requiring immediate crew awareness and possible activity Level C advisories requiring crew awareness
