BendixKing KMH 920 System KMH 980 - Manual (Page 44)

Rev 2
KTA 970/KMH 980 Pilot’s Guide
006-18273-0000
EGPWS Introduction
36
WHAT IS THE GA-EGPWS?
The Bendix/King GA-EGPWS is a small lightweight computer that can be
installed in most single- and multi-engine piston aircraft, small turboprop
aircraft and other aircraft in which a Terrain Avoidance & Warning
System is applicable. Additional interface capability with other GA-
EGPWS units allow the system to be installed in larger corporate and
business aircraft.
The system uses information from an existing GPS (already in the air-
craft) or internal GPS receiver contained in the GA-EGPWS computer.
The only other required input is uncorrected barometric pressure from
the aircraft’s transponder or altitude reporting/encoding device. An addi-
tional input of Outside Air Temperature (OAT) is optional and recom-
mended. See section on Aircraft Altitude.
The system can also accept inputs from various digital air data comput-
ers, when such equipment is available on an aircraft. The terrain data-
base, obstacle database, runway database and alerting / warning func-
tionality are contained in the GA-EGPWS computer, and require no pilot
action for system operation.
Outputs generated by the system are:
* Terrain / Obstacle Display
* Voice alerts / Warnings / Callouts
* Visual alerts / Warnings
During normal flight operations, the system remains essentially silent,
using GPS, altitude and temperature (optional) data in combination with
its various database information to provide the pilot with a display of the
aircraft position relative to surrounding terrain and known obstacles,
thereby providing unprecedented situational awareness for the pilot.
Pilot workload in interacting with the system during normal flight is mini-
mal.