Type IV

De-icing Fluid

Type IV de-icing fluid is a viscous, non-Newtonian fluid designed for preventing ice formation on aircraft surfaces during flight. It contains a high concentration of thickening agents, such as long-chain polymers, which create a gel-like coating on the aircraft’s surfaces to prevent ice accretion. Type IV fluid is typically applied hot, either before departure as an anti-icing treatment or during flight through onboard anti-icing systems.