BendixKing KTA 910 System KTA 970 - Manual (Page 54)

Rev 2
KTA 870/KMH 880 Pilot’s Guide EGPWS Functions and Features
006-18265-0000
46
Installations without a heading input into the GA-EGPWS will either have
a NORTH oriented or BLANK display when on the ground. Depending
upon configuration the display will automatically transition to a TRACK
UP (MAG XXX TRK) orientation upon reaching a configurable airspeed
(typically 10 to 45 kts GPS ground speed). Once the display has transi-
tioned to the TRACK UP display, the depiction of terrain is oriented to the
current GPS track of the aircraft. The display will continue in this TRACK
UP mode until transition below a configurable GPS speed when it will
automatically transition back to either the NORTH UP or BLANK display.
The BLANK display annunciates that the display is currently unavailable
(DISPLAY UNAVAIL).
Installations with a heading input into the GA-EGPWS will present a ter-
rain depiction oriented to the current heading of the aircraft (HEADING
UP). These installations will not transition between different orientations
of the display and will typically present the current heading as `MAG
XXX HDG'.
The most important function of the system is to provide the pilot with eas-
ily interpreted information about terrain/obstacles relative to the aircraft,
and thus increase the pilot’s Situational Awareness. In brief, when using
the Terrain Display during flight, the normal presentation of green, yellow
and red colors indicate:
The following chart outlines all the various colors used by the GA-
EGPWS Terrain Display and their functions in providing Situational
Awareness to the pilot. Some display types may not support all colors
Color
Solid Red
Solid Yellow
50% Red Dots
50% Yellow Dots
25% Yellow Dots
Solid Green
(Peaks only)
50% Green Dots
(Peaks only)
16% Green Dots
(Peaks only)
Black
16% Cyan
(Peaks only)
Magenta Dots
Indication
Terrain/Obstacle Threat Area - Warning.
Terrain/Obstacle Threat Area - Caution.
Terrain/Obstacle that is more than 2000 feet above aircraft altitude.
Terrain/Obstacle that is between 1000 and 2000 feet above aircraft altitude.
Terrain/Obstacle that is 250 feet below to 1000 feet above aircraft altitude.
Shown only when no Red or Yellow Terrain/Obstacle areas are within range on the
display. Highest Terrain/Obstacle not within 250 feet of aircraft altitude.
Terrain/Obstacle that is 250 feet below to 1000 feet below aircraft altitude.
Terrain/Obstacle that is the middle elevation band when there are no Red or Yellow
terrain areas within range on the display.
Terrain/Obstacle that is 1000 to 2000 feet below aircraft altitude.
Terrain/Obstacle that is the lower elevation band when there are no Red or Yellow
terrain areas within range on the display.
No significant Terrain/Obstacle.
Area having sea level elevation (0 feet MSL).
Unknown terrain. No terrain data in the database for the magenta shown.