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ST3400 TAWS/RMI PILOT’S GUIDE
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Terrain Display During Ground Operations
When connected to Bendix/King and Universal GPS/FMS receivers, the
ST3400 will not display terrain data until the aircraft starts taxiing. This
prevents the display from showing terrain data when these receivers are in
self-test mode, which is not indicated in the receiver data stream.
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ST3400 TAWS/RMI PILOT’S GUIDE
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CHAPTER 6. TERR SELECTION BUTTON
The TERRain button toggles the display between RELative altitude mode,
which color-codes terrain above and below the current aircraft altitude, and
PREDictive altitude mode, which color-codes based on the aircraft’s future
altitude.
Press the [TERR] button to display the REL view of terrain.
Press again to display the PRED view of terrain.
When in REL or PRED view, the [VUE] button to toggles the display
between FULL view and ARC view.
Bearing pointer indications may be overlaid on the terrain display with the
BRG1 or BRG2 buttons.
Color Zones for RELative and PREDicted Altitude Displays
On the RELative and PREDicted altitude displays, terrain that is farthest
below the aircraft altitude is shown in black. Terrain closer to the aircraft
altitude is shown in green. Terrain even closer to the aircraft altitude is
shown in yellow. Terrain above the aircraft altitude is shown in light red.
Terrain way above the aircraft altitude is shown in dark red.
On an approach to the airport, the color bands become compressed; in
effect the yellow/green bands shrink as the aircraft gets closer to the
runway. Within 1nm of the airport (during flight) and when on the ground,
green and yellow are suppressed. Red is used to depict terrain above the
aircraft.
