10-69
190-01004-03 Rev. P
GTN 625/635/650 Pilot’s Guide
Terrain
Sink Rate (FPM)
Height Above T
err
ain
(Feet)
“DON’T SINK”
or
“TOO LOW, TERRAIN”
Figure 10-50 Negative Climb Rate (NCR) Sink Rate
10.8.5.10 Excessive Below Glideslope/Glidepath Deviation Alert
A
Glideslope Deviation
or
Glidepath Deviation (GSD)
caution alert
is issued when the system detects that the aircraft is significantly below the
glidepath for the selected approach.
Radio Altitude
(Feet)
Number of Dots Below Glideslope/Glidepath
“GLIDESLOPE”
Figure 10-51 Excessive Below Glideslope/Glidepath Deviation Alert Criteria
GSD alerting is only active after departure and the following conditions are
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