L-3 TECHNOLOGIES ESI-500, Pilot'S Manual

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ESI-500
Pilot’s Guide 3-24
Display Features
Synthetic Vision Terrain Alerting Function
The Synthetic Vision Terrain Alerting function looks ahead of the
aircraft projected vertical and horizontal flight path, including turns, to
determine if any terrain or obstacles might pose a threat. (Hereafter
the word “terrain” refers to “terrain or obstacles” unless indicated
otherwise.) The ESI-500 Synthetic Vision Terrain Alerting function
determines the terrain threat based on the phase of flight (Figure 3-21)
and on the predicted terrain clearance compared to the required terrain
clearance (Tables 3-1 & 3-2). Alerts are disabled within the area 1.2
nmi around the runway and 500 ft above the runway threshold when
you are landing to prevent nuisance alerts.
Figure 3-21: Phase of Flight Definitions
15 nmi
Terminal Phase
3,500 ft
1,900 ft
1,500 ft
or
Not to Scale
Approach
Phase
Nearest
Runway
Elevation
Enroute Phase
Departure
Phase
5 nmi 5 nmi