Type 4 Deicing Fluid

Water freezes at 0 c.

Type 4 deicing fluid.

An ethylene glycol based sae ams1428 type iv fluid that is formulated to be used neat undiluted as an anti icing fluid for extended holdover endurance times during active snow freezing rain precipitation weather events. For additional fluid requirements see reference section paragraph 4 1. Deicing fluids work best when they are diluted with water. Type ii and iv fluids may be applied heated or cold and diluted or full strength.

Designed to meet sae type i and ams 1424 specifications for de icing aircraft type 1 de icing fluid is made from propylene glycol. This fluid is not to be used when temperatures are under 22 f. The differences between type i and type iv de icing fluid. Similar to type ii fluids type iv fluids can be used in a variety of ways.

Regulations may vary in different locations. For de icing it is the heat and hydraulic force that accomplish the task. For example undiluted dow ucar deicing fluid type i ethylene glycol has a freezing point of 28 c. Characterization and compliance with applicable laws are the responsibility solely of the generator.

Pearson airport cyyz faa link for information on de icing and anti icing fluids. This fluid has a low viscosity and flows off of aircraft easily. Ams 1424 type 1 deicing fluid page 2 of 9 p501. In general deicing anti icing fluid may be uncolored if so requested.

Colour for type ii fluids and green is the colour for type iv fluids. When a type i fluid fails it fails suddenly. Unheated and undiluted or diluted for anti icing. Treatment storage transportation and disposal must be in accordance with federal state provincial and local regulations.

Type i fluids have the shortest hot. 1 1 1 fluid handling and storage. Type iv fluids offer maximum anti icing holdover protection but can also be used for de icing purposes. The colour for type iii fluid has not yet been determined.

Polar guard advance is supplied as a ready to use formulation. For anti icing it is primarily the heat imparted to the airframe that accomplishes the task.