***Meaning*** :: <u>S</u>upercooled <u>L</u>arge <u>D</u>rops ***Definition*** :: Water drops with a diameter greater than 50 micrometers (0.05 mm) that exist in a liquid form at air temperatures below 0°C. SLD conditions include freezing drizzle drops and freezing raindrops. ***Source*** :: [[AC 91-74]] ***Additional Info:*** - One of the first signs of SLD icing is droplets that splatter and create icing on the sides of windshields and other areas that don’t otherwise tend to ice up. Like mixed icing, SLD icing can quickly create unusual shapes. - From [Dangerous Droplets](https://www.aopa.org/news-and-media/all-news/2022/december/pilot/wx-watch-dangerous-droplets) by [[AOPA]] #glossary #acronym