What are the main types of icing encountered in aviation?

The main types of icing encountered in aviation are categorized primarily as structural icing and induction icing. Structural icing forms on the external surfaces of an aircraft, including wings, fuselage, and tail, when supercooled water droplets freeze upon contact with the aircraft's surfaces. This poses significant risks as it can change the aerodynamics of the aircraft, increase weight, and potentially lead to a loss of control.

Induction icing occurs within the engine, particularly in turbine engines. When water vapor freezes in the engine's intake, it can obstruct airflow, resulting in reduced engine performance or failure. Understanding these two categories is crucial for pilots and aviation professionals to implement strategies for mitigation and safety.

While rime and clear icing are specific classifications of structural icing, the broader categorization into structural and induction provides a more comprehensive overview of the types of icing that can directly affect aircraft operation. Mixed and frost, while relevant in a broader discussion about icing, are not main categories in the context of aviation hazards. Similarly, visible and invisible do not adequately define the types of icing; rather, they refer to the perception of icing phenomena rather than the fundamental types encountered.