Icing

(Section 2.5.1.3)

An ice deposit may form on different parts of an aircraft when flying in supercooled clouds or precipitation. The intensity and characteristics of the icing vary, but they depend primarily on the degree of supercooling, the droplet diameters and concentration, and the characteristics of the airflow around the aircraft. The main types of icing are soft rime, hard rime, clear ice, and glaze.