12-25190-01007-03 Rev. C
GTN 725/750 Pilot’s Guide
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
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.
Icing Potential Shading
Selected Icing Altitude
SLD Threat
Touch To Select
Icing Altitude
Present Position
Figure 12-34 Icing and SLD
2. Touch the WX Aloft ALT – or + keys to increase or decrease
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.
Figure 12-35 Icing Legend
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