----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
Figured I'd see what the manufacturer says. Here are the quotes from
their web site:
Aircraft Cleaning with Simple Green or Crystal Simple Green
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".
Aluminum - Is it safe to use Simple Green?
Simple Green products have been successfully and safely used on aircraft,
automotive, industrial and consumer aluminum items for over 20 years.
However, caution and common sense must be used: Aluminum is a soft metal
that easily corrodes with unprotected exposure to water. The aqueous-base
and alkalinity of Simple Green or Crystal Simple Green can accelerate the
corrosion process. Therefore, contact times of Simple Green and Crystal
Simple Green with unprotected or unpainted aluminum surfaces should be
kept as brief as the job will allow - never for more than 10 minutes.
Large cleaning jobs should be conducted in smaller-area stages to achieve
lower contact time. Rinsing after cleaning should always be extremely
thorough - paying special attention to flush out cracks and crevices to
remove all Simple Green/Crystal Simple Green residues. Unfinished,
uncoated or unpainted aluminum cleaned with Simple Green products should
receive some sort of protectant after cleaning to prevent oxidation.
********************************************************
The way I read it, if it's painted, it's OK-- if Not, proceed rapidly &
rinse well...
John Barsness
N3201H
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