Mr Milenko Mitrović - Spirta was then technical director of Aeroput and suggested that the Board of Directors on the basis of his project, which was in March 1934 tested in the Eiffel wind tunnel in Paris, made for Aeroput in his workshop for repairing aircraft an airplane which would be used as aviotaxi, for whom he felt a great need.
Gospodin Milenko Mitrović - Spirta je tada bio tehnički direktor Aeroput-a i predložio je Upravnom odboru da na osnovu njegovog projekta, koji je u martu mesecu 1934. godine testiran u Ajfelovom aerotunelu u Parizu, Aeroput u svojoj radionici za popravku aviona napravi avion koji bi se koristio kao aviotaksi za kojim se osećala velika potreba.