What is the
• An Aural Declutter feature reduces the repetition of warn-
ing messages. This feature is optional, and may be disabled
by system program pins during installation.
• Geometric Altitude, based on GPS altitude, is a computed
pseudo-barometric altitude designed to reduce or eliminate
altitude errors resulting from temperature extremes, non-
standard pressure altitude conditions, and altimeter
miss-sets. This ensures an optimal EGPWS alerting and dis-
Some of these features have been added to the EGPWS as the
system evolved and are not present in all Enhanced Ground
Proximity Warning Computer (EGPWC) part numbers. For spe-
cific effectivity, refer to an applicable Airplane Flight Manual
(AFM) or EGPWS Airplane Flight Manual Supplement (AFMS) or
contact Honeywell for assistance.
The EGPWC is packaged in a 2 MCU ARINC 600-6 rack mounted
enclosure weighing less than 8 lbs. No special vibration isolation
mounting or forced air-cooling is required.
115 VAC (400 Hz.) or 28 VDC versions of the EGPWC are avail-
able. Units are also available with an internal GPS receiver for
required GPS data when another GPS source is not available.
For more detailed descriptions and information, contact
060-4241-000 • Rev. D - March 2000
MK V & MK VII EGPWS Pilot Guide