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Electronic flight instrument system
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.
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