4/30/2008. Remarks by Walter van Tilborg: "The M235 is one of very few homebuilt aircraft in Bulgaria and it was an original design of Alexander Marinosyan of Sadovo. After Marinosyan had halted construction of his earlier LOA aerobatic two-seater, work on the M235 started in 1998 and the aircraft first flew on March 30, 2003. It had a mixed construction (steel tube fuselage and wings, wooden rise and fabric covering) and engine was a 118 hp Lycoming O-235-C."

11/15/2022. Remarks by Johan Visschedijk: "The engine, cowling and instruments of this aircraft were later used for the construction of a new 'second study' design, the M235 Etude II."