Garmin 400/500 Manual

A SERVICE OF

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34

Section 2

TERRAIN Operation

Color Terrain/Obstacle Location

Red Terrain/Obstacle is within 100’ or

above aircraft altitude.

Yellow Terrain/Obstacle is within 1000’ of

aircraft altitude.

Black Terrain/Obstacle is more than 1000’

below aircraft altitude.

To enable TERRAIN:

1. Select the TERRAIN Page and press MENU. ‘Enable Terrain?’ is selected by default (Figure 2-5).

2. Press

ENT. The TERRAIN system is functional again.

TERRAIN Symbols

The following symbols are used to represent obstacles and potential impact points on the Terrain Page.

Note that obstacle symbols are shown on display zoom ranges up to 10 nm:

Unlighted Obstacles

<1000’ AGL

Lighted Obstacles

<1000’ AGL

Unlighted Obstacles

>1000’ AGL

Lighted Obstacles

>1000’ AGL

Potential Impact Points

Color Interpretation

The Garmin TERRAIN system uses black, yellow, and red to depict terrain information relative to

aircraft altitude (Figure 2-6 and Table 2-1).

Terrain Color Symbology

PotentialImpact Point

UnlightedObstacle

ProjectedFlight Path

1000'AGL

100'Threshold

Figure 2-6: TERRAIN Altitude/Color Correlation

Figure 2-5: Enabling Terrain

Table 2-1: TERRAIN Color Symbology