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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. However, there are now few flight deck instruments for which no electronic display is available. == Overview == 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. Typical EFIS displays and controls can be seen at this (B737 technical information ) web site. The equivalent electromechanical instruments are also shown here. An EFIS installation will follow the sequence: * Displays * Controls * Data processors A basic EFIS might have all these facilities in the one unit. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Electronic flight instrument system」の詳細全文を読む スポンサード リンク
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