Terrain Awareness (TAWS)
The Terrain awareness function changes the color of the terrain according to the
ground distance at the current altitude of the aircraft. Green terrain coloring
means the aircraft is more than the set altitude above the terrain, yellow that the
aircraft is above the terrain, but not more than the preset alert altitude, and red
the aircraft is below the terrain.
To activate terrain awareness:
Press Menu to display the menu options.
Press the TAWS button.
The alert altitude at which the terrain turns yellow can be set in the Display tab of
the Setup dialog.
When the Terrain Awareness function is turned on, the TAWS button is
displayed, even if the menu is hidden.
In the 2D view, the Terrain awareness function is disabled when the view is
zoomed out (scale > 5 nautical miles).
Terrain awareness is also not available when viewing icing levels.
AV8OR 3D User Guide