Deicing Fluid Colours

As such they can be used on any aircraft as they shear blow off even at low speeds.

Deicing fluid colours. There are four standard aircraft de icing and anti icing fluid types. They are typically dyed green to aid in the application of a consistent layer of fluid. Flammable oxidizing fluids. There are actually two types of de icing fluid one is orange and one is green.

Type i fluids are the thinnest of fluids. Type i ii iii and iv. The fluid concentration within the fluid water mixture expressed as a percentage by volume this is not required for type 1 fluid the local time in hours and minutes at the beginning of the final or only de icing anti icing step optionally for type 2 and 4 fluids only the complete name of the anti icing fluid the brand name. This fluid is dyed orange.

Type iii fluids are generally bright yellow in color. Type iv has the same purpose and meets the same ams standards as type ii fluids but they provide a longer holdover time. Type iv meet sae type iv and ams 1428 specifications for de icing aircraft with the intention of ice retardation. Potable cooling boiler feed other waters.

Toxic and corrosive fluids. They also have the shortest hold over times hot or estimated times of protection in active frost or freezing precipitation. This fluid is also made from propylene glycol. The dye is intended to indicate which parts of the aircraft have been treated and to differentiate between fluids type i fluids are orange type iv fluids are green.