Aircraft Exterior Cleaning Guide
Wash, oxidation removal, polish, and sealant — four different steps that get lumped together as one.
"Exterior cleaning" covers a range of actual work, from a routine wash to correcting oxidation that's built up over years. Understanding the steps helps set expectations for what a wash will and won't fix.
The four steps
1. Wash
Aircraft-safe soap and a hand wash of the full airframe, including belly degrease and gear wells — no brushes near control surfaces or static wicks.
2. Oxidation removal
Bare aluminum and painted skins both oxidize under UV and weather exposure. Removing it is a machine or hand polishing step, not something a wash accomplishes on its own.
3. Polish
After oxidation is cut, polishing restores shine and evens out the surface — done panel by panel, not as a single pass over the whole airframe.
4. Ceramic sealant
A protective layer applied after polish that slows future oxidation and makes the next wash pull off grime more easily.
Wash vs. correction
A routine wash covers the first step above. Oxidation removal, polish, and sealant are correction and protection work — part of a full exterior detail. Staying on a regular wash schedule slows how much correction work is needed at the next detail.
Questions, Answered.
Can automotive wash products be used on an aircraft?+
Not safely in most cases — automotive products aren't formulated for aircraft-grade aluminum, paint, and the sensitivity of control surfaces and static wicks. Aircraft-appropriate products and technique matter here more than most owners expect.
How do I know if my aircraft has oxidation?+
A dull, chalky look to bare aluminum or fading paint that doesn't come back with a normal wash is the usual sign. It's easiest to remove early, before it has months or years to set in.
Is ceramic sealant worth it?+
For most owners, yes — it doesn't eliminate the need for washing, but it slows oxidation and cuts down how aggressive future polishing needs to be, which keeps the finish protected between full details.