Troubling...
Richard,
In my many travels over the years, about the only place I've ever seen the coatings your talking about are on race cars and the like. Seems one WOULD run into a big problem with having the airplane signed-off at annual with a non-certificated item under the TCDS... and any IA who would sign-off on it would be hanging his ticket out in the breeze for all sorts of liability! Probably why I've never seen such coatings on any airplanes.
SkyKing
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