The Super Aero 45 and Aero 145 were progressive developments of the Aero 45 light twin which flew for the first time in prototype form on 21 July 1947 in Czechoslovakia. It was the Country’s first post-war aviation product and was very successful.

The AT-3 was designed and developed in Poland by Aero Sp of Warsaw as a light two-seat sporting aircraft of all metal construction. Derived from the Pottier P220 it can be fitted with variants of the Rotax 912 series of four-cylinder engines, or the Limbach L2400 series.