Negative Climb Rate After Take-Off Alert - Garmin G500 Pilot's Manual

4.3.5.7

Negative Climb Rate After Take-Off Alert

The Negative Climb Rate (NCR) After Take-Off alert (also referred to as
"Altitude Loss After Take-Off") provides alerts when the system determines the
aircraft is losing altitude (closing upon terrain) after takeoff. The aural message
"Don't Sink" is given for NCR alerts, accompanied by an annunciation and a
pop-up terrain alert on the display. 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 2 NM or less
• Heading change from the departure heading is less than 110º
The NCR alerting parameters as defined by TSO-C151c are shown below.
1000
800
600
400
200
0
1000
900
800
700
600
500
400
300
200
100
0
Figure 4-21 Negative Climb Rate (NCR) Alert Criteria
190-00601-02 Rev. J
20 40
Altitude Loss (Feet)
500 1000 1500
Sink Rate (Feet Per Minute)
Garmin G500/G600 Pilot's Guide
TOC
"DON'T SINK" "DON'T SINK"
60 80 100
"DON'T SINK" "DON'T SINK"
2000 2500
Cover
120 140
3000 3500 4000
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