Pilot's Guide

4-23190-00601-02 Rev. H
Garmin G500/600 Pilot’s Guide
CoverTOC
Foreword
Sec 1
System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
Glossary Appendix A
Appendix B
Index
4.4.5.7 Negative Climb Rate After Take-Off Alert (NCR)
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
Height Above Terrain (Feet)
Altitude Loss (Feet)
0 20 40 60 80 100 120 140
“DON’T SINK”“DON’T SINK”
1000
900
800
700
600
500
400
300
200
100
Height Above Terrain (Feet)
Sink Rate (Feet Per Minute)
0
“DON’T SINK”“DON’T SINK”
500 1000 1500 2500 35002000 3000 4000
Figure 4-21 Negative Climb Rate (NCR) Alert Criteria