Garmin GTN 725 Pilot's Manual page 329

12.1.17 Icing
The Icing product shows a graphic view of the current icing environment
in four categories: light, moderate, severe, and extreme (not specific to aircraft
type). The Icing product is not a forecast, but a presentation of the current
conditions at the time of the analysis. Supercooled Large Droplet (SLD) icing
conditions are characterized by the presence of relatively large, super cooled
water droplets indicative of freezing drizzle and freezing rain aloft. SLD threat
areas are depicted as black and red blocks over the Icing colors. Icing and SLD
data are shown between 1,000 feet and 30,000 feet in 3,000 foot increments.
1. While viewing the Data Link Weather menu, touch the Icing
key.
2. Touch the WX Aloft ALT
the reporting altitude of icing in 3,000 foot increments. The
selected altitude is shown in a window above the altitude keys.
3. Touch the Icing key again to turn it off.
190-01007-03 Rev. D
Figure 12-34 Icing and SLD
–
Figure 12-35 Icing Legend
Garmin GTN 725/750 Pilot's Guide
SLD Threat
Icing Potential Shading
Present Position
Selected Icing Altitude
Touch To Select
Icing Altitude
+
or keys to increase or decrease
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Appendix
12-25
Index