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Honeywell EGPWS MK V Pilot's Manual page 19

Enhanced ground proximity warning system
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M
5
ODE
Excessive
Deviation
Below
Glideslope
060-4241-000 • Rev. D - March 2000
MK V & MK VII EGPWS Pilot Guide
Mode 5 provides two levels of alerting for when the
aircraft descends below glideslope, resulting in
activation of EGPWS caution lights and aural messages.
The first level alert occurs when below 1000 feet Radio
Altitude and the aircraft is 1.3 dots or greater below the
beam. This turns on the caution lights and is called a
"soft" alert because the audio message "GLIDESLOPE"
is enunciated at half volume. 20% increases in the
glideslope deviation cause additional "GLIDESLOPE"
messages enunciated at a progressively faster rate.
The second level alert occurs when below 300 feet Radio
Altitude with 2 dots or greater glideslope deviation. This
is called a "hard" alert because a louder
"GLIDESLOPE, GLIDESLOPE" message is enunciated
every 3 seconds continuing until the "hard" envelope is
exited. The caution lights remain on until a glideslope
deviation less than 1.3 dots is achieved.
To avoid unwanted Below Glideslope alerts when
capturing the localizer between 500 and 1000 feet AGL,
alerting is varied in the following ways:
• Below Glideslope alerts are enabled only if the
localizer is within 2 dots, landing gear and flaps
are selected, Glideslope Cancel is not active, and
a front course approach is determined.
19

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