A high-wing, all-metal, working-surface, fixed-wing, single-hulled monoplane, this aircraft featured a gull wing on the upper fuselage between the cockpit and the engine and was fitted with two .5mm Darne 7 machine guns.
January 14, 1933, before the official tests started, the aircraft went into a spin at 9000 m and crashed, killing the pilot who seemed to have lost consciousness due to the altitude reached.
At the moment when the Loire 43 was accidentally destroyed, the construction of a second prototype was completed at Saint-Nazaire, equipped for comparison with a 14-cylinder Gnome et Rhône 14 Kd[1] engine of 740 hp and armed with two 20mm Oerlikon guns in the wing.
This aircraft later received a Gnome-Rhône 14 Kfs of 900 hp with which it took the air on July 18, 1935 and finished its career as a parachute test plane under the name Loire 45 LP1.
The aircraft survived the Second World War and flew again in the early 1950s with the civil registration F-AKHP and a military livery.