AvPlan includes a terrain database which covers all of Australia at a resolution of approximately 1km square. A view of terrain height based on your current altitude can be enabled on the En Route page.
Terrain which is 1500ft below to 500ft below is yellow.
Terrain which is 500 ft below you, and higher, is red.
When a plan is in ‘Plan’ mode, the terrain will be colour coded based on the maximum planned altitude, and not your current altitude.
Terrain warnings, based on those defined in TSO-C151b (TAWS B), will come in a release shortly.
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