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Electronic Flight Instrument System

๐Ÿ›ฉ️An electronic flight instrument system (EFIS) is an electronic display technology on the flight deck display system.


 ๐Ÿ›ฉ️It usually consists of Engine Indicating and Crew Alerting System (EICAS), Primary Flight Display (PFD) and Multi-Function Display (MFD) display.

๐Ÿ›ฉ️They commonly use a liquid crystal display (LCD) even though they earlier used cathode ray tube (CRT) displays.

๐Ÿ›ฉ️Installation of the EFIS varies greatly this is where a wide-body aircraft is equipped with six or more display units on which flight and navigation data are displayed while a light aircraft is likely to have one unit.

✈️The installation of EFIS follows the sequence
✈️ Displays
✈️Controls
✈️ Data processors

๐Ÿ›ฉ️Basic EFIS contains all the facilities in one unit....
✈️Display Units-
๐Ÿ›ซPrimary flight display (PFD)
๐Ÿ›ซNavigation display (ND)
๐Ÿ›ซMulti-function display (MFD)

๐Ÿ›ซElectronic centralized aircraft monitoring (ECAM)/Engine indications and crew alerting system (EICAS)....

✈️Control Panels-
๐Ÿ›ซThere is the provision of controls to the pilots where they select the display mode and range (for instance, compass rose or maps) and key in data (like a certain heading)....

✈️Data Processor-
๐Ÿ›ซThe symbol generator also known as display processing computer or display electronics unit, produces the visual display in the EFIS. It receives data inputs from the pilot and the EFIS format selections made, and signals from sensors...

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