The biplane was manufactured from December 1910, in the company Mégevet, Corsier (where the Dufaux brothers had completed their initial flight tests).

The now much improved Dufaux 5 led Ernest Failloubaz (1892–1919), the youngest pilot in Switzerland (who was 19 years of age at that time), to fly it.

There was a crash landing on the last day of the three-day operation of these flights to begin the Swiss military aviation.

[4] Dufaux was used from October 1911 at the Flight School founded by Emile Taddéoli in Viry, near Geneva.

Charles Girod, Georges Cailler, Gustave Lecoultre, Hollinger, Beck and Knutti received flying lessons in the flight school of their chief pilot Durafour at Avenches in the course of 1911.