Taws display unit
The TAWS Display Unit is installed in the central pedestal. It provides controls for ON/OFF
selection, display brightness, display range, and view selection. The TAWS Display, Unit
initializes in MAP display upon power up and 'NO EXTERNAL POSITION DATA' is
displayed. Terrain can be selected by pressing the TERR function key. In case of a terrain
awareness caution or warning the terrain display will automatically pop-up, and a range of
1ONM is displayed provided the display is selected ON.
The TAWS Display Unit displays terrain and obstacles in the vicinity of the aircraft within the
selected range. The display provides a graphical plan-view image of the surrounding terrain
as varying density patterns of green, yellow, and red.
Two display modes are available:
• Conventional Display Mode; terrain will be presented relative to aircraft altitude.
• Peaks Display Mode; terrain will be presented relative to MSL.
The conventional mode is displayed whenever there is
terrain withi
n 500 ft below (250 ft with
gear down) the aircraft. Whenever there is no terrain within 500 ft (250 ft with gear down) the
peaks mode is displayed.
Conventional mode display
Color Indication
Solid Red Terrain/Obstacle threat area - Warning
Solid Yellow Terrain/Obstacle threat area - Caution
50% Red Fill Terrain/Obstacle that is more than 2000 ft above aircraft altitude
50% Yellow Fill Terrain/Obstacle that is between 1000 and 2000 ft above aircraft
altitude
25% Yellow Fill Terrain/Obstacle that is 500 ft below to 1000 ft above aircraft altitude
50% Green Fill Terrain/Obstacle that is 500 ft below to 1000 ft below aircraft altitude
16% Green Terrain/Obstacle that is 1000 to 2000 ft below aircraft altitude
Black No significant terrain/obstacle
16% Cyan Fill Water at MSL
Magenta Fill Unknown terrain. No terrain data in the database for the magenta area
shown
Fokker 50 - Flight Navigation Instruments
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