Plain English Meaning

A system that stops ice from forming on the propeller blades while you fly through icy conditions, either by warming the blades electrically or by spreading a special fluid along them.

Full Definition

A system that prevents ice from forming on the leading edges of propeller blades and the spinner during flight in icing conditions. It typically works by applying heat through electrically heated elements bonded to the blade leading edges, or by feeding a freezing-point-depressant fluid (such as isopropyl alcohol or a glycol-based fluid) through a slinger ring that distributes the fluid outward along the blades by centrifugal force.

Context Anchor

You will see this term in descriptions, , and checks for airplanes equipped for flight near freezing .