This International Standard defines the requirements for ISO type I fluids used in the removal and prevention of ice, snow, or frost on exterior surfaces of main line and regional civil transport airplanes on the ground. This International Standard is applicable to de-icing/anti-icing fluids for use on airplanes in general. However, the applicability may have limitations for particular airplane types. It is the airplane operator’s responsibility to consult the aircraft operations manual, the aircraft maintenance manual and the service letters of the airplane manufacturer, to determine any limitations/restrictions relating to the use of de-icing/anti-icing fluids that conform to this International Standard for the type and model of airplane to be treated. See also ISO 11076.