User Guide

190-00552-00 Rev. A
Garmin G1000 Pilot’s Guide for the Columbia 350/400
6-49
HAZARD AVOIDANCE
EXCESSIVE DESCENT RATE ALERT (EDR)
The Excessive Descent Rate (EDR) alert provides an audible warning when the aircraft is descending toward
the ground at excessive speed. Figure 6-58 shows the relationship between the height above the terrain
and the descent rate. When the aircraft is in the EDR alert area shown in yellow, the system announces the
caution, “Sink Rate.” When the aircraft is in the EDR alert area shown in red, the system announces the
warning, “Pull Up.”
5000
4500
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0
2000 4000 6000 8000 10000 12000
"PULL UP""
P
U
L
L
U
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S
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N
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R
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Descent Rate (FPM)
Height Above Terrain (Feet)
Figure 6-57 Excessive Descent Rate
NEGATIVE CLIMB RATE AFTER TAKEOFF ALERT (NCR)
The Negative Climb Rate After Takeoff (NCR) alert provides an audible warning when the aircraft is
losing altitude after takeoff. The aural message, “Don’t Sink” or “Too Low - Terrain” is given for NCR alerts,
accompanied by an annunciation and a pop-up terrain alert on the display.
NCR alert is active only during the departure phase of flight under the following conditions:
• Height above the terrain is less than 700 feet
• The aircraft is less than 2 nm from the departure airport
• Heading change from the departure heading is less than 110 degrees.
“FIVE-HUNDRED” AURAL ALERT
The “Five-hundred” alert provides an audible advisory to the crew when the aircraft descends to within 500
feet of terrain. At 500 feet the aural message “Five hundred” is heard. There are no display annunciations or
pop-up alerts that accompany the “Five-hundred” aural message.
“Five-hundred” alert is enabled when the aircraft’s height above the terrain is more than 675 feet. The alert
is disabled when the aircraft’s height above the terrain becomes less than 500 feet.