This SAE Standard specifies requirements for a gelled compound for cleaning the soiled exterior of service aircraft. The cleaning gel may be applied by pressure pump as a thixotropic liquid@ by brushing or by swabbing. The surfaces to be cleaned may be unpainted metal or surfaces painted with glossy or matt schemes@ including strippable acrylic paint complying with DTD 5599. This Standard includes tests to limit specific forms of corrosion that affect aircraft structural materials.