Final answer:
The three types of ice an aircraft is subject to are clear ice, mixed ice, and rime ice.
Step-by-step explanation:
The three types of ice an aircraft is subject to are clear ice, mixed ice, and rime ice.
Clear ice forms when supercooled liquid droplets freeze slowly on an aircraft's surfaces, resulting in a smooth and solid layer of ice.
Mixed ice is a combination of clear ice and rime ice, formed when supercooled droplets freeze quickly and trap air bubbles within the ice layer.
Rime ice forms when supercooled water droplets freeze rapidly on an aircraft's surfaces, creating a rough, opaque, and fragile layer of ice.