Terrain Awareness and Warning System

1
Terrain Awareness and Warning System
2
TAWS Background

• Ability to look ahead of aircraft
• Required on turbine-powered airplanes
• Not required on turbine-powered helicopters

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Flight Profile at 150 fpm
600

Altitude Altitude
500
Time to Impact 158 sec
400
Caution Terrain
Time to Impact 97 sec
Warning Terrain
300
Altitude / Elevation (ft)
Time to Impact 84 sec
200
100
0
0
1
2
3
4
5
6
7
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Distance to Impact (nm)
4
Screen Display at 400 Feet
Altitude, Altitude
5
Screen Display at 250 Feet
Caution Terrain
6
Screen Display at 210 Feet
Warning Terrain
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