This fictional skins are based on the Bücker Bü-131 Jungmann used by the Swiss Air Force from 1936 until 1971.
A-83 depicts the common painting called "Bückergelb" (Bücker-yellow) and A-5 shows the camouflage with neutrality stripes used while operating at the Swiss borders.
v1: A-83 added
v2: A-5 added and minor bugs on A-83 fixed
v3: Pilot textures fixed