Garmin G1000 NXi Pilot's Manual page 314

HAZARD AVOIDANCE
NEGATIVE CLIMB RATE AFTER TAKEOFF ALERT (NCR)
The Negative Climb Rate (NCR) After Takeoff alert (also referred to as "Altitude Loss After Takeoff")
provides alerts when the system determines the aircraft is losing altitude (closing upon terrain) after takeoff.
The voice alert "Don't Sink" is given for NCR alerts, accompanied by visual annunciations. NCR alerting is
only active when departing from an airport and when the following conditions are met:
• Height above the terrain is less than 700 feet
• Distance from the departure airport is 5 nm or less
• Heading change from the departure heading is less than 110 degrees
NCR alerts can be triggered by either altitude loss or sink rate.
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Distance to Destination (NM)
Figure 6-62 PDA Alerting Threshold
20 40 60
Altitude Loss (Feet)
Figure 6-63 Negative Climb Rate (NCR) Altitude Loss
Garmin G1000 NXi Pilot's Guide for the Cessna Nav III
PDA ALERTING AREA
"DON'T SINK"
or
"TOO LOW, TERRAIN"
80 100 120 140
190-02177-00 Rev. A