Title: Describe icing formation and characteristics.
Course: Aircraft Pilot Training II (20053-II) > Section: Examining Atmospheric and Meteorological Conditions

Description should include the following:

- Two conditions are necessary for structural icing in flight: (1) the aircraft must be flying through visible water such as rain or cloud droplets, and (2) the temperature at the point where the moisture strikes the aircraft must be 0° C or colder.
- Aerodynamic effects may cause the remaining portion to freeze. The way in which the remaining portion freezes determines the type of icing.
- The types of structural icing are clear, rime, and a mixture of the two. Each type has its identifying features.

PLT274