ERAU Commercial Checkride Practice Test

The type of ice recognized for having both characteristics of clear and rime ice is mixed ice. This form of ice occurs in conditions where there is a combination of supercooled water droplets and freezing temperatures, leading to the accumulation of rime ice (which is milky and opaque) along with the more solid and transparent formations typical of clear ice.

In the context of aviation and ice formation, clear ice is formed by the freezing of larger water droplets which creates a smooth, glossy appearance. Rime ice, on the other hand, forms when small supercooled droplets freeze upon impact, typically resulting in a rough texture. Mixed ice combines both of these forms, exhibiting the smooth regions of clear ice alongside the rough, white areas of rime ice. This dual characteristic can affect aircraft performance and requires careful consideration when flying in icy conditions.