Aspen Avionics EVOLUTION EFD1000 PRO MAX PFD - Page 145

CHAPTER 4 REFERENCE GUIDE
EFD1000 PRO MAX PFD Pilot’s Guide
Page 4-89
091-00005-002 ()
Figure 4-142
Terrain Coloring VIEW
Figure 4-141
Terrain Coloring VIEW
WARNING
Changes in heading can cause an immediate conflict that
is much less than the 45 or 30 seconds explained here.
4.10.6.2 Predictive Terrain/Obstacle Conflict
The TWS uses the Flight Path Marker to predict a collision with terrain or an obstacle.
When the Flight Path Marker is positioned over terrain or an obstacle and the Terrain
Warning System predicts that a potential collision will occur within 45 seconds (if the
current flight path is maintained) the audible alert is sounded and the green Flight Path
Marker changes its shape and turns to an amber color (Figure 4-141).
An amber text alert is annunciated on the Data Bar announcing the type of threat, e.g.
“CAUTION - TERRAIN, TERRAIN” or
“CAUTION - OBSTACLE, OBSTACLE”
Similarly, when TWS predicts that a potential collision will occur within 30 seconds (if
the current flight path is maintained) the audible alert is sounded and the Flight Path
Marker changes its shape and turns to a red color (Figure 4-142).
A red text alert is annunciated on the Data Bar announcing the type of threat, e.g.
“WARNING - TERRAIN, TERRAIN” or
“WARNING - OBSTACLE, OBSTACLE”