ENGINE INDICATING AND CREW ALERTING SYSTEM (EICAS)

ENGINE INDICATING AND CREW ALERTING SYSTEM (EICAS)

Basic system of EICAS is the same as ECAM with the same philosophy of system designs and system architecture. It covers engine area and computers are installed for data acquisition, processing, warning generation, normal display and failure display along with procedures.

1.7 ELECTRONIC FLIGHT INSTRUMENT SYSTEM (EFIS)

This is centralized system for flight path and navigational area and electronic display systems are designed appropriate to it.

The EFIS enables display for the crew of flight path control and navigation data.

In a typical aircraft, EFIS system provides two CRTs at disposal of the Captain, two CRTs for the pilot on which is displayed all the information that is usually displayed by the following instruments:

- Attitude Director Indicator

- Horizontal situation indicator

- Mach-Airspeed Indicator

- Radio Altimeter Indicator

- Weather Radar Indicator

- Flight Mode Annunciator.

Thanks to the high level of flexibility of the CRTs, the EFIS makes it possible to display, at a given moment, only the information required by the present flight phase.

The upper instrument displays the information necessary for short-term aircraft control, hence the name: Primary Flight Display (PFD), that is, aircraft attitude, computed airspeed (VC) and Mach number, altitude and course deviations etc.

The lower instrument Display (ND), displays the navigation information necessary for the flight phase: rose, flight plan, radar image.

Like ECAM system, EFIS system display is generated by SGUs. SGUs receive input from SDAC and FWC. These SGUs, SDC and FWCs are also used by the ECAM.