Honeywell EGPWS MK V Pilot's Manual page 42

Enhanced ground proximity warning system
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Table of Contents
Radio
Altitude
continued
FMS, IRS,
AHRS, Accel-
erometer
Global
Positioning
System (GPS)
VHF Nav
Reciever
Terrain Dis-
play System
AOA Vane or
Stall Warning
Discretes
42
This feature reduces the potential for nuisance alerts caused by
false tracking of the Radio Altimeter.
Pitch and Roll Attitude, Latitude and Longitude Position, Body
Normal and Longitudinal Accelerations, Magnetic and True
Track Angles, Magnetic and True Heading, Inertial Altitude,
Groundspeed, and mode.
Latitude and Longitude Position, True Track Angle, GPS
Altitude, Groundspeed, Horizontal and Vertical Figure of Merit
(VFOM/HFOM), Horizontal and Vertical Dilution of Precision
(HDOP/VDOP), Horizontal Integrity Limit (HIL), and sensor
status.
Glideslope, Localizer, ILS Tuned, Selected Runway
Heading.
Display range, and if available the Hazard Bus from a Predictive
Windshear System (PWS). If EFIS, the EFIS display mode is
used in some configurations.
AOA, Stick Shaker Margin.
Discrete inputs are used for system configuration, signal/status
input, and control input functions.
EGPWS program pins are utilized to tell the system the type of
aircraft and interface that it is in. These are defined and
established during the EGPWS installation. EGPWS output
functions are consequently the result of the program pin state
read each time the EGPWS is powered on.
Signal/status discretes include signals such as Decision Height,
Landing Flaps selected or Flap Position discretes, Landing Gear
selected, Terrain Display Range, and status discretes such as
Glideslope Valid, Localizer Valid, Radio Altitude Valid associated
with analog signal inputs.
Control discretes control EGPWS functions. These include
EGPWS Test, Glideslope Cancel, Glideslope Inhibit or Glideslope
Backcourse, Terrain (display) select, Terrain Inhibit, Flap
Over-ride, Audio Inhibit, Altitude Callout Enable, Steep
Approach Enable, and ILS Tuned discretes.
060-4241-000 • Rev. D - March 2000
MK V & MK VII EGPWS Pilot Guide

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