BendixKing KMD 540 - Addendum System KMD 850 - Manual (Page 20)

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KMD 550/850 Terrain Addendum Rev 3 Jun/2004
SET FUNCTION
Note: This feature is not available for all installations.
The SET function allows setting of four EGPWS discretes. The softkeys
that are available are dependent on the particular aircraft installation.
There is an annunciator indicating when each of the four discretes is set.
The following figure shows an example of all four discretes configured
and set.
ERROR MESSAGES
ALTITUDE MONITORING
Some EGPWS sensors monitor the various altitude and temperature (if
used) inputs that it receives during flight for the computation of
Geometric Altitude. If there is an abnormal difference detected among
these altitude values, the system can provide visual and voice alerts to
the pilot.
Normal differences that are the result of non-ISA temperature conditions
or are due to high or low-pressure systems will not normally activate the
altitude monitor. Large errors due to faulty equipment or malfunctioning
pitot-static systems will normally be detected by the monitor.
When an abnormal altitude discrepancy is detected by the system, there
will be the text message “Check Alt” shown on the display as long as the
condition that triggered the alert persists.
The pilot should check all aircraft altimeters to ensure that the correct
altimeter setting is set, that altimeter systems cross-check and that the
pilot’s altimeter is not stuck and indicating an erroneous altitude.
KMD 550-850 EGPWS PG R3 7/1/04 2:49 PM Page 12