Answers to most questions about using Simple Green can be found here.
If you can't find the answer to your question, please let us know & we'll be very happy to help.
Many private and commercial aircraft owners and operators have cleaned their craft with Simple Green or Crystal Simple Green for many years. However, these products do not have Mil-Prf (military testing) authority. The testing involves very long (168 hours in one test) soaking of various metals in the solution and then a corrosion inspection. If an aircraft owner only wants to use mil-prf approved products; he will not want to use Simple Green. Please see the additional information under "Aluminum".
Some form of agitation is required when using an aqueous-based cleaner. Agitation can be accomplished through re-circulation, spray, scrubbing by hand and use of mechanical equipment.