Anti-icing and De-icing

Anti-icing

Anti-icing is the process of protecting against the formation of frozen contaminant, ice, snow and slush of an aircraft.

De-icing

De-icing is the process of removing frozen contaminant, ice, snow and slush from an aircraft.

When there are freezing conditions and precipitation, de-icing an aircraft is crucial.

De-icing on the ground is usually done by spraying aircraft with a de-icing fluid such as propylene glycol, similar to ethylene glycol antifreeze used in some automobile
engine coolants. Ethylene Glycol (EG) is still in use for aircraft de-icing in some parts of the world because it has a lower operational use temperature (LOUT) than PG and
is more versatile in application, but Propylene Glycol (PG) is more common because it is classified as non-toxic, unlike Ethylene Glycol.

Dry Disconnect Couplings used in Anti-icing and De-icing systems.

2" (70 mm), 2,5" (105 mm) and 3" (119 mm)