1.Electronic Flight Instrument System or EFIS.

2. Flight Management Sysytem or FMS.

3.Automatic Flight Control System or AFCS.


5.Flight Instrumens and Equipment.


EFIS is a flight data presentation system using display units to provide the pilots with aircraft altitude, navigation data, and additional information such as weather radar display, radio attitude, navaid waypoint locations, automatic flight control mode annunciation and diagnostic messages.

EFIS receive data from a variety of sensors and uses this data in order to provide the specified functions. It also interfaces with the automatic flight control system and the flight management system.

EFIS is equipped with two Display Processor Units or DPU”s



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