060-4314-000 • Rev. C - May 2004
8 MK VI & MK VIII EGPWS Pilot Guide
Enhanced
Ground
Proximity
Warning
System
EGPWS
Database
The EGPWS adds to these 6 basic functions the ability to compare
the aircraft position to an internal database and provide addi
-
tional alerting and display capabilities for enhanced situational
awareness and safety (hence the term “Enhanced” GPWS).
The EGPWS internal database consists of four subsets:
• Terrain data of varying degrees of resolution.
• Cataloged obstacles 100 feet or greater in height located
within North America, portions of Europe and portions of Asia
(expanding as data is obtained).
• Airport runway data containing information on all runways
2000 feet or longer in length. This value is configurable as
3500 feet in the MK VIII in software load -008 or later. For a
specific list of the airports included, refer to Honeywell docu
-
ment 060-4326-000, or 060-4267-000.
This can also be accessed on the Internet at www.egpws.com.
• An Envelope Modulation database to support the Envelope
Modulation feature described later. (This feature not available
in -001 release).
The MK VI EGPWS provides regional database coverage whereas
the MK VIII EGPWS provides a worldwide database . For the MK
VI, the database is divided into three regions referred to as the
Americas Region, Atlantic Region, and the Pacific Region.
The EGPWS incorporates the functions of the basic Ground
Proximity Warning System (GPWS). This includes the following
alerting modes:
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