Engine-indicating and crew-alerting system

An engine-indicating and crew-alerting system (EICAS)^[1] is an integrated system used in modern aircraft to provide aircraft flight crew with instrumentation and crew annunciations for aircraft engines and other systems. On EICAS equipped aircraft the "recommended remedial action" is called a checklist.

Components

EICAS typically includes instrumentation of various engine parameters, including for example speed of rotation, temperature values including exhaust gas temperature, fuel flow and quantity, oil pressure etc. Other aircraft systems typically monitored by EICAS are for example hydraulic, pneumatic, electrical, deicing, environmental and control surface systems. EICAS has high connectivity & provides data acquisition and routing.^[2]

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.

Alternative systems

Some alternatives are:

Electronic Centralised Aircraft Monitor (ECAM) on Airbus
Centralized Fault Detection System (CFDS) on McDonnell Douglas
Flight Warning System (FWS) on Fokker
Engine Warning Display (EWD) on ATR
Комплексная система электронной индикации и сигнализации (КСЭИС) on Antonov.

Presence

The system is called EICAS at least on the following aircraft:

Jetliners

The first Boeing airliner with EICAS was the Boeing 757. The Boeing 747 has EICAS since the 747-400. No version of the Boeing 737 has EICAS. The Boeing 717 has CFDS, as it was originally a McDonnell Douglas product.

The Embraer ERJ family and the Embraer E-Jet family have EICAS.

The Bombardier CRJ and the Bombardier CSeries have EICAS.

The Fairchild-Dornier 328JET has EICAS.

The COMAC ARJ21 and the COMAC C919 have EICAS.

Turboprop airliners

The Saab 2000 has EICAS.

The Dornier 328 and the Dornier 228NG have EICAS.

The Xi'an MA60 and the Xi'an MA600 have EICAS.

Limitations

On some Bombardier aircraft, it is possible to call up the wrong checklist. Messages forbidding take-off can be shown as advisories.^[3]

The 757, 767, and 747-400 have no electronic checklists.

The ERJ and the E-Jets have no electronic checklists.

The CRJ have no electronic checklists.

The Do-328 and the Do-328JET have no electronic checklists.

The Saab 2000 has no electronic checklists.

Gallery

EICAS of a Boeing 787 at the center-left
EICAS of a Boeing KC-46 at the center-left
Boeing 757 and Boeing 767 optional cockpit upgrade^[4] EICAS at the center-left
EICAS of a Boeing 767-400 at the center
EICAS of a Boeing 767
EICAS of a Boeing 757 at the center
EICAS of a Boeing 747-8 at the center
EICAS of a Boeing 747-400 at the center
EICAS of an Embraer C-390 at the center-right
EICAS of an Embraer ERJ

References

^ Wells, Alexander T.; Rodrigues, Clarence C. (2004). Commercial aviation safety (4th ed.). McGraw-Hill Professional. p. 245. ISBN 978-0-07-141742-6.
^ "EICAS displays". Astronautics. Astronautics Corporation of America. Archived from the original on 2011-07-07. Retrieved 2020-12-03.
^ Gilbert, Gordon. "Multiple EICAS Alerts Preceded Fatal Challenger In-flight Upset - AIN". Aviation International News.
^ "Large Display System".

External links

Astronautics Corporation of America EICAS displays (Archive)

Jet engines and aircraft gas turbines

Gas turbines
and jet propulsion

Types	Air turborocket Pulsejet/Valveless pulsejet/Gluhareff Pressure Jet Pulse detonation engine Propfan Turbofan Turbojet Turboprop Turboshaft Ramjet Scramjet Shcramjet Rocket Rotating detonation engine
Mechanical components	Accessory drive Air intake Afterburner (reheat) Axial compressor Centrifugal compressor Combustor Constant speed drive Impeller Nose bullet Propelling nozzle Turbine blade
Principles	Aircraft engine starting Bleed air Brayton cycle Bypass ratio Compressor stall Engine pressure ratio (EPR) Flameout Jet engine performance Overall pressure ratio Propulsive efficiency Specific impulse Thrust Thrust lapse Thrust specific fuel consumption Thrust to weight ratio Variable cycle engine Windmill restart

Propellers

Components	Propeller governor Propeller speed reduction unit
Principles	Autofeather Blade pitch Constant-speed Contra-rotating Counter-rotating Proprotor Scimitar Variable-pitch

Engine
instruments

Engine controls

Fuel and induction
systems

Other systems

v t e Aircraft components and systems
Airframe structure	Aft pressure bulkhead Cabane strut Canopy Crack arrestor Cruciform tail Dope Empennage Fabric covering Fairing Flying wires Former Fuselage Hardpoint Interplane strut Jury strut Leading edge Lift strut Longeron Nacelle Rib Spar Stabilizer Stressed skin Strut T-tail Tailplane Trailing edge Triple tail Twin tail V-tail Vertical stabilizer Wing root Wing tip Wingbox
Flight controls	Aileron Airbrake Artificial feel Autopilot Canard Centre stick Deceleron Dive brake Dual control Electro-hydraulic actuator Elevator Elevon Flaperon Flight control modes Fly-by-wire Gust lock HOTAS Rudder Rudder pedals Servo tab Side-stick Spoiler Spoileron Stabilator Stick pusher Stick shaker Trim tab Wing warping Yaw damper Yoke
Aerodynamic and high-lift devices	Active Aeroelastic Wing Adaptive compliant wing Anti-shock body Blown flap Channel wing Dog-tooth Drag-reducing aerospike Flap Gouge flap Gurney flap Krueger flap Leading-edge cuff Leading-edge droop flap LEX Slats Slot Stall strips Strake Variable-sweep wing Vortex generator Vortilon Wing fence Winglet
Avionic and flight instrument systems	ACAS Air data boom Air data computer Aircraft periscope Airspeed indicator Altimeter Annunciator panel Astrodome Attitude indicator Compass Course deviation indicator EFIS EICAS Flight management system Glass cockpit GPS Head-up display Heading indicator Horizontal situation indicator INS ISIS Multi-function display Pitot–static system Radar altimeter TCAS Transponder Turn and slip indicator Variometer Yaw string
Propulsion controls, devices and fuel systems	Autothrottle Drop tank FADEC Fuel tank Gascolator Inlet cone Intake ramp NACA cowling NACA duct Self-sealing fuel tank Splitter plate Throttle Thrust lever Thrust reversal Townend ring War emergency power Wet wing
Landing and arresting gear	Aircraft tire Arrestor hook Autobrake Conventional landing gear Drogue parachute Landing gear Landing gear extender Oleo strut Tricycle landing gear Tundra tire
Escape systems	Ejection seat Escape crew capsule
Other systems	Aircraft lavatory Auxiliary power unit Bleed air system Deicing boot Emergency oxygen system Environmental control system Flight recorder Hydraulic system Ice protection system In-flight entertainment system Landing lights Navigation light Passenger service unit Ram air turbine

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