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Electronic Flight Instrument System (EFIS)

 
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K.Haroon
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PostPosted: Wed May 28, 2014 10:43 pm    Post subject: Electronic Flight Instrument System (EFIS) Reply with quote

Arrow Electronic Flight Instrument System (EFIS)

An electronic flight instrument system (EFIS) is a flight deck instrument display system in which the display technology used is electronic rather than electromechanical. EFIS normally consists of a primary flight display (PFD), multi-function display (MFD) and engine indicating and crew alerting system (EICAS) display. Although cathode ray tube (CRT) displays were used at first, liquid crystal displays (LCD) are now more common. The complex electromechanical attitude director indicator (ADI) and horizontal situation indicator (HSI) were the first candidates for replacement by EFIS.

EFIS installations vary greatly. A light aircraft might be equipped with one display unit, on which flight and navigation data are displayed. A wide-body aircraft is likely to have six or more display units. An EFIS installation will follow the sequence:

Displays
Controls
Data processors

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