EGPWS Functions and Features
Rev 2
KTA 970/KMH 980 Pilot’s Guide
006-18273-0000
48
GA-EGPWS “Peaks” Terrain Display at 12,000 feet near Seattle, WA
“LOOK-AHEAD” ALERTING AND WARNING
Using aircraft position, altitude and flight path information, the system
provides an envelope of protection for the aircraft that is independent
from the Terrain Awareness Display. This “Look-Ahead” function com-
pares the aircraft flight path to terrain and obstacle database information,
and distance to known runways.
When the “Look-Ahead” function detects a terrain or obstacle threat
approximately one minute ahead of the aircraft, the voice alert “Caution
Terrain, Caution Terrain” (or “Caution Obstacle, Caution Obstacle”) is
given, and a bright, solid yellow “threat area” is shown on the Terrain
Display. Should the aircraft flight path continue toward the threat area,
the alert message will repeat approximately every 7 seconds.
Display Orientation
Here Magnetic Track is
up and at 160
°
.
Display Range
Nautical Miles
Peaks Elevation
Maximum elevation is
displayed over minimum
elevation. Here maximum
elevation is 6,000ft. and
minimum is 3,000ft.
Range Rings
Outer ring is selected
range, inner ring is half
the selected range. Here
outer ring is 40nm and the
inner ring is 20nm.
Geometric Altitude
Displayed as MSL or GSL
