Around 1930 there was a French interest in small aircraft capable of evacuating a single ill or wounded patient to hospital from roughly prepared sites in the colonies.

They posed several design challenges, principally around the need for a large, clear internal space for the patient, with easy ground access from a stretcher.

The outer regions also tapered in thickness from below, providing mild dihedral, and their trailing edges were almost entirely filled by narrow chord, unbalanced ailerons.

It was dural skinned apart from an easily removable section over the rear of the patient's compartment which enabled it be rapidly reconfigured to take a seated passenger.

It had fixed landing gear, with each mainwheel on a cranked axle assisted by a trailing drag strut, both hinged on the central fuselage underside.

[7] In July 1931 Les Amis de l'aviation sanitaire (Friends of Medical Aviation) organised a large meeting on the subject spread over several days, one of which was used for demonstration flights undertaken by nine different types of aircraft.