PILOT’S OPERATING HANDBOOK
SUPPLEMENT 49
”GARMIN” G1000 TAWS SYSTEM
Edition 1 -- October 31, 2013
Rev. 0
Page 9.49.8
EXCESSIVE DESCENT RATE ALERT
The purpose of the Excessive Descent Rate (EDR) alert is to provide suitable notification when the airplane is
determined to be closing (descending) upon terrain at an excessive speed. Figure 9.49.2 shows the parameters
for the alert as defined by TSO-C151b.
Figure 9.49.2 - Excessive Descent Rate Alert Criteria
The aural/displayed messages associated with the EDR function are described in the table 9.49.4.
Alert Type
PFD/MFD TAWS Page
Annunciation
MFD Map Page
Pop-Up Alert
Aural Message
Excessive Descent
Rate Warning (EDR)
(Red)
PULL UP
PULL-UP
”Pull up”
Excessive Descent
Rate Caution (EDR)
(Amber)
TERRAIN
SINK RATE
”Sink rate”
Table 9.49.4 - EDR alerts