I noticed in the POH that the SR20 must be painted white due, it says, to the composite construction (and associated skin heat limits).
I also notice that the Lancair does not seem to suffer from this same restriction (the top of the first Columbia 300 is white, but the lower half is not).
Does anyone know if two-tone paint schemes will ever be allowed for the SR20?
Being in the plastics industry and invloved in molding - it is true that plastics are affected by the suns ultra-violet rays. That is ALL colors of plastic resin, the darker the color the more affected it is - therefore, “White” is the least to be affected by the suns UV rays.
Hence, the Lancair having the dark color on the underside…There is an additive that can be mixed with the resins to help prevent the UV rays from attacking the plastic, called UV inhibitors, and I am assuming the the people at CD are aware of this fact, and are already using it now.
Therefore, the exterior does NOT have be truly be white in color, but maybe a lighter share of gray, or some other light color. Plus, if the plane is parked in a hangar, that too will add life to the plastic… However, if it’s tied down outside, and it’s in the southern areas of the USA - white would be BEST (at least on the top side).