03/31/2012. Remarks by Johan Visschedijk : "The Société Scintex was formed by Jean-Michel Vernhes in 1956 and it set up a production line to build the Piel CP.301A Emeraude for French club and private owners. Scintex attempted to broaden its product base in the early 1960s and flew the first ML-145 Rubis, registered F-BJMA on May 25, 1961 powered by an 145 hp Continental O-300-B engine. The Rubis was a four-seat low-wing cabin tourer and featured a rather unusual retractable tailwheel undercarriage at a time when most competing types were using tricycle gear.
In its production version it was designated ML-250 with a 250 hp Lycoming O-540-A1D5 engine, larger tail surfaces and a five-seat interior. First flown on June 3, 1962, the Rubis did not command a large market and Scintex abandoned production in late 1964. The Scintex-built Rubis prototypes c/n 01 to 03 and production aircraft were c/n 101 to 105."