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Section 2
TAWS Operation
TAWS Symbols
The symbols depicted in Figure 2-6 are used to represent obstacles and potential impact points on the
TAWS Page. Note that obstacle symbols are shown on display zoom ranges up to 10 nm.
Color Interpretation
Garmin TAWS uses black, yellow, and red to depict terrain information relative to aircraft altitude
(Figure 2-7). Each color is associated with an alert severity level and a suggested course of action. Color
assignments are used by terrain graphics, obstacle symbols, and visual annunciations.
Color
TERRAIN/Obstacle Loca-
tion
Alert Level
Suggested Aircrew Response
Red
TERRAIN/Obstacle is within 100’ or
above aircraft altitude.
WARNING
Initiate climb and/or turn away from
terrain/obstacle.
Yellow
TERRAIN/Obstacle is within 1000’
of aircraft altitude.
CAUTION
Be aware of surroundings.
Be prepared to take action.
Black
TERRAIN/Obstacle is more than
1000’ below aircraft altitude.
NO DANGER
No action required.
Table 2-1: TAWS Color Symbology
Potential Impact Point
Unlighted Obstacle
Projected Flight Path
1000' AGL
100' Threshold
Figure 2-7: Terrain Altitude/Color Correlation
Unlighted Obstacles
<1000’ AGL
Lighted Obstacles
<1000’ AGL
Unlighted Obstacles
>1000’ AGL
Lighted Obstacles
>1000’ AGL
Potential Impact Points
Figure 2-6: TAWS Symbols
