Todays aviation authorities have very strict rules when it comes to the upkeep and maintenance of an aircraft.

Engines operating near salt water (within 200km from a coast line), should have their compressors given a desalination rinse (no soap!) after each day’s operation.

Private aircraft owners also know that when you spend the kind of money you do to own an aircraft, you want to keep that aircraft looking the part.

De-mineralised water is pure water - H2O. When it evaporates, it leaves no residue behind, which means no watermarks. It also acts like a sponge, wanting to absorb minerals to get back to its natural state, removing all the salt etc. from the at risk areas.