Radar Altimeter - Garmin G1000 Pilot's Manual

Alerting is inhibited while the aircraft is on the ground and until the aircraft reaches 150 feet above the MDA.
If the aircraft proceeds to climb after having reached the MDA, once it reaches 50 feet above the MDA, alerting
is disabled.

RADAR ALTIMETER

If an optional radar altimeter is installed, when the radar height (the aircraft altitude above ground level
detected by the radar altimeter) is between zero and 2500 feet, the current value is displayed in green to the
right of the current aircraft heading (Figure 2-42). Display of radar height becomes more sensitive as the height
above ground decreases (Table 2-3).
190-00962-04 Rev. A
Figure 2-41 Barometric MDA/DH
Figure 2-42 Current Radar Height
Radar Height Range
0 to 200 feet
200 to 1500 feet
1500 to 2500 feet
Table 2-3 Radar Altimeter Sensitivity
Garmin G1000 Pilot's Guide for the Diamond DA42NG
FLIGHT INSTRUMENTS
Shown to Nearest
5 feet
10 feet
50 feet
Radar Altimeter
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