14 July 1913

Leonce Bertin's 5th design, a 2-seat racing monoplane, was announced in January 1912, but appeared only later in the year in time for the 1912 Paris Salon. The long fuselage was of pentagonal section with the deck flat; the wings were rigged without dihedral, and to warp. It flew successfully until 14 July 1913 when one of the wings collapsed; Bertin as passenger and his son Rene as pilot were both killed.