Terrain Displays - Garmin G1000 NXi Pilot's Manual

HAZARD AVOIDANCE

6.3 TERRAIN DISPLAYS

Do not use terrain avoidance displays as the sole source of information for maintaining separation
WARNING:
from terrain and obstacles. Garmin obtains terrain and obstacle data from third party sources and cannot
independently verify the accuracy of the information.
Terrain data is not displayed when the aircraft is outside of the installed terrain database coverage
NOTE:
area.
Terrain and obstacle alerting is not available north of 89º North latitude and south of 89º South
NOTE:
latitude. This is due to limitations present within the Terrain database and the system's ability to process
the data representing the affected areas.
Terrain and obstacle alerting requires the Terrain-SVT or TAWS-B option. No terrain or obstacle
NOTE:
alerting occurs for the Terrain Proximity feature.
The terrain system increases situational awareness and aids in reducing controlled flight into terrain (CFIT) and
obstacles.
One of the following terrain systems is installed on this aircraft:
• Terrain Proximity
• Terrain-SVT (included with the Garmin SVT option when the Terrain Awareness and Warning System Class-B
(TAWS-B) is not installed; refer to the Flight Instruments section for more information about Garmin SVT.)
• TAWS-B (optional)
The installed terrain system provides color indications on map displays when terrain or obstacles are within
a certain altitude threshold from the aircraft. Terrain-SVT and TAWS-B furthermore provide advisory visual
annunciations and voice alerts to indicate the presence of threatening terrain or obstacles relevant to the projected
flight path. This alerting capability is not present in the Terrain Proximity feature. Compared to Terrain-SVT
alerting, TAWS-B uses more sophisticated algorithms to assess aircraft distance from terrain and obstacles. Only
the TAWS-B system complies with TSO-C15b certification standards, and includes additional alerting capabilities
than the Terrain-SVT system.
The terrain system requires the following for proper operation:
• Valid 3-D GPS position
• Valid terrain and obstacle databases
The terrain system uses terrain and obstacle information supplied by government sources. Terrain information
is based on terrain elevation information in a database that may contain inaccuracies. Individual obstructions may
be shown if available in the database. Garmin verifies the data to confirm accuracy of the content. However, the
displayed information should never be understood as being all-inclusive and data may still contain inaccuracies.
290 Garmin G1000 NXi Pilot's Guide for the Cessna Nav III 190-02177-00 Rev. A