Pilot's Operating Handbook
Supplement 49
GARMIN TAWS system
Edition 2 - December 31, 2015
Rev. 2
Page 9.49.11
3. 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
PIM - DO NOT USE FOR FLIGHT OPERATIONS