Precipitation (Precip) Data - Garmin GTN 650 Series Pilot's Manual Upgrade Supplement

5.6.7

Precipitation (PRECIP) Data

Graphical data is overlaid on the map indicating the rainfall detected by
ground based radar for a specific area. The colors indicating increasing levels
of rainfall progresses from light green for light rainfall to red for heavy rainfall.
Review the Limitations section in the front of this guide for the limitations that
apply to the Connext data. Rainfall data is color coded as follows:
Figure 5-35 Connext PRECIP Weather Map Display and Legend
The "No Coverage" color indicates that no data is available for that area, and
rainfall in that area is unknown.
When weather data is received, the airborne system will display that data for
20 minutes. If no new data has been received for a given area, the rainfall will
be removed after 20 minutes and the area will revert back to the "No Coverage"
color.
The Connext Weather Function is based on a ground-to-air data link and
requires that the appropriate ground systems are broadcasting weather data and
the aircraft is within reception range of the Ground Broadcast Transceiver (GBT).
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GTN 650/750 Series SW V3.00 Upgrade Supplement 190- 01007-05 Rev A