The second patented Uniplan of the Gonnel brothers – Raoul-Georges and Arthur-Édouard – built at Juvisy, France during March 1911.
This rebuilt, 2nd version of the machine, which is actually a complete rebuilt of the fuselage and undercarriage, was also fitted with a more powerful engine, a 45-50 hp 4-cylinder Velox-Suère.
All Aero 