Terrain Information; Obstacle Information - Garmin GDU 37X Pilot's Manual

TERRAIN INFORMATION

Two views are displayed on the Terrain (TER) Page: the Map View, and the Profile
View. The areas of the terrain shaded red are predicted to be within 100 feet below
or above the aircraft. The yellow terrain areas are between the user-defined Caution
Elevation and 100 feet below the aircraft. By default, the Caution Elevation is 1,000
feet; therefore, the areas in yellow are between 1,000 feet and 100 feet below the
aircraft. The black areas are further than the Caution Elevation. A projected point of
impact is marked with an "X" symbol.

OBSTACLE INFORMATION

Obstacles are shown on the Terrain Page at or below the map range of 12 nm.
Obstacles are also shown on the Map Page when the map range is set to 3 nm or
below.
Standard aeronautical chart symbols are used for lighted or unlighted obstacles
taller than 200 feet Above Ground Level (AGL). Refer to the Obstacle Icons legend
below.
Each obstacle is labeled with the altitude of the top of the obstacle, or Mean Sea
Level (MSL). Each obstacle also lists, in parentheses, the actual height of the obstacle,
or Above Ground Level (AGL).
Unlighted Obstacle Lighted Obstacle Potential
< 1000' > 1000'
AGL AGL
190-01054-00 Rev. E
< 1000' > 1000'
AGL AGL
Terrain Obstacle Colors and Symbology
Garmin GDU
Hazard Avoidance
Impact Obstacle Location
Points
WARNING: Red obstacle
is above or within 100'
below current aircraft
altitude
CAUTION: Yellow
obstacle is between
100' and 1000' (default)
below current aircraft
altitude
37X Pilot's Guide
™
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