The Duverne-Saran 01 was designed to carry a pilot and two passengers rapidly but economically with the extra security provided by two engines.
The wing was in three parts, with a short span, constant chord centre section and two straight-tapered, square-tipped outer panels.
The fuselage design made it easy to modify; for example, a hinged panel in the side could admit patients on a stretcher.
[8] In December 1937 it changed engines again, with the installation of smaller, 30 kW (40 hp) Train 4Ts, similar to the 6Ts but with four cylinders, in order to make record attempts in the low power category.
[9] A year later, in December 1938 the Duverne-Saran had begun tests powered by two 52 kW (70 hp) air-cooled [Minié 4.D0 Horus flat fours.