Chapter 5 - Ground Crew Supplement

Internal Inspection of Tanks

131.  Some deicing/anti-icing trucks have the anti-icing fluid tank sharing a common wall with the deicing fluid tank. Some tank walls can develop cracks, allowing deicing and anti-icing fluids to mix. The presence of even small amounts of deicing fluid in the anti-icing fluid can cause significant anti-icing fluid performance and thus effect the HOT times. Valves and hoses can also leak and allow fluid mixing or contamination. Routine inspection is required to help prevent these issues from arising.