Download Garmin Software Version 1578.01 Cockpit Reference Guide

Hazard Avoidance
Flight
Instruments
Displaying Precipitation Weather Information
1) Select the MAP Softkey (for the PFD Inset Map, select the INSET Softkey).
This step is not necessary on the Connext Weather Data Link Page.
Radar data shown represents lowest level, base reflectivity, of radar returns. The
display of the information is color-coded to indicate the weather severity level. All
weather product legends can be viewed on the Connext Weather Data Link Page. For
the Precipitation legend, select the LEGEND Softkey when Precipitation is selected
for display.
Precipitation Limitations
Radar images may have certain limitations:
• Radar base reflectivity does not provide sufficient information to determine cloud
layers or precipitation characteristics (wet hail vs. rain). For example, it is not
possible to distinguish between wet snow, wet hail, and rain.
• Radar base reflectivity is sampled at the minimum antenna elevation angle. An
individual radar site cannot depict high altitude storms at close ranges. It has
no information about storms directly over the site.
• When zoomed in to a range of 30 nm, each square block on the display represents
an area of four square kilometers.
The following may cause abnormalities in displayed radar images:
• Ground clutter
• Strobes and spurious radar data
• Sun strobes (when the radar antenna points directly at the sun)
• Interference from buildings or mountains, which may cause shadows
• Metallic dust from military aircraft, which can cause alterations in radar scans
Infrared Satellite
Infrared Satellite (IR SAT) data depicts cloud top temperatures from satellite
imagery. Brighter cloud top colors indicate cooler temperatures occurring at higher
altitudes.
Index
Appendix
Annun/Alerts
Abnormal
Operation
Additional
Features
Hazard
Avoidance
Procedures
Flight
Planning
GPS Nav
Nav/Com/
XPDR/Audio
EIS
2) Select the PRECIP Softkey.
58
Garmin G1000 Cockpit Reference Guide for the Piper PA-34-220T Seneca
190-01405-00 Rev. A