Terrain Alerts - Garmin GPS 400 Pilot's Manual And Reference

SECTION 9
TERRAIN
9.3

TERRAIN ALERTS

TERRAIN Alerts are issued when flight conditions
meet parameters that are set within TERRAIN software
algorithms. TERRAIN alerts typically employ either an
ADVISORY or a CAUTION alert severity level, or both.
When an alert is issued, visual annunciations are
displayed.
Annunciations appear in a dedicated field in the lower
left corner of the display (Figure 9-2). Annunciations are
color-coded according to Table 9-2.
TERRAIN Annunciation
Figure 9-2 TERRAIN Annunciation Field
NOTE: TERRAIN Advisory Alerts are displayed
as constant black text on a yellow background;
TERRAIN Caution Alerts are displayed as flashing
black text on a yellow background.
9-4
Pop-up terrain alerts (Figure 9-3 & 9-4) can also
appear during an alert, but only when the TERRAIN Page
is not displayed.
There are two options when an alert is displayed:
• Press the CLR Key. This acknowledges the
pop-up alert and returns to the currently
viewed page.
• Press the ENT Key. This acknowledges the
pop-up alert and accesses the TERRAIN Page.
Figure 9-4 TERRAIN Caution Pop-up (Flashing)
GPS 400 Pilot's Guide and Reference
Figure 9-3 TERRAIN Advisory Pop-up
190-00140-60 Rev. E