Excessive Descent Rate Alert (Edr) - Garmin 400 Series Pilot's Manual Addendum

Excessive Descent Rate Alert (EDR)

The purpose of the Excessive Descent Rate alert is to provide suitable alerts when the aircraft is deter-
mined to be closing (descending) upon terrain at an excessive speed. Figure 3-4 shows the parameters for
the alert as defined by TSO-C151b.
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0
" P U L L U P " "PULL UP"
2000 4000 6000 8000
Descent Rate (FPM)
Figure 3-4 Excessive Descent Rate Graph
10000 12000
Section 3
TAWS Alerts
Excessive Descent Rate Severity Levels
CAUTION—The annunciation and pop-up terrain alert
are accompanied by the aural message "Sink Rate".
WARNING—The annunciation and pop-up terrain alert
are accompanied by the aural message "Pull Up".
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