Excessive Rate Of Descent Alerting And Warning - Honeywell Bendix/King KTA970 Pilot's Manual

KTA 970/KMH 980 Pilot's Guide EGPWS Functions and Features
The following figure is a graphical representation of the Runway Field
Clearance Floor in both Class B and Class C configurations.
Runway Field Clearance Floor (RFCF)
EXCESSIVE RATE OF DESCENT ALERTING AND
WARNING
The GA-EGPWS uses both GPS Vertical Velocity and pressure altitude
to compute vertical velocity information when the aircraft does not pro-
vide specific air data for this purpose. In either case, when the aircraft is
descending toward terrain at a high rate for its relative altitude above ter-
rain, the system will provide alerting and warning to the pilot. This func-
tion is always active.
The following graph represents the envelope of protection provided for
Excessive Rate of Descent scenarios:
Excessive Descent Rate
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Rev 2 006-18273-0000