AIRPLANE
OPERATIONS
MANUAL
AUTOPILOT
REVISION 29
2-19-05
Page
3
Code
01
− AIR DATA COMPUTERS (ADCs): supply pressure altitude,
barometrically corrected altitude, true airspeed, calibrated airspeed,
vertical speed, Mach number, static air temperature and total air
temperature to both IC-600.
− RADIO ALTIMETER SYSTEM: provides radio altitude, low altitude
awareness and decision height information on the PFD.
− STALL PROTECTION SYSTEM: provides sensitive, visual and aural
indications of an impending stall. If a stall condition is near to occur,
the system actuates the stick shaker, disengages the autopilot and, if
necessary, actuates the stick pusher.
− ENHANCED GROUND PROXIMITY WARNING SYSTEM
(EGPWS/GPWS): receives, from IC-600-1, the glideslope deviation,
localizer deviation, selected decision height, selected course, packed
discrete and selected terrain range.
− ELECTRONIC FLIGHT INSTRUMENT SYSTEM (EFIS): present
information to the flight crew. Consists of two Primary Flight Displays
(PFD), two multi function displays (MFD) and one EICAS display.
− HORIZONTAL STABILIZER CONTROL UNIT (HSCU): provides, to
both IC-600 #1 and #2, the horizontal stabilizer position. It also
receives, from IC-600 #1, the autopilot command, when the autopilot
is engaged, and the amount of trim demanded.
− AURAL WARNING UNIT (AWU): receives signal from the autopilot,
generates the appropriate messages and tones and send the audio
signal to the Audio Digital System, which routes the messages to the
speakers.
− FLAP ELECTRONIC CONTROL UNIT (FECU): moves the inboard
and outboard flap panels and sends flap position signal to the
autopilot system.
− FLIGHT MANAGEMENT SYSTEM (FMS): provides high accuracy in
long range lateral navigation.
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