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.
Charles Girod, Georges Cailler, Gustave Lecoultre, Hollinger, Beck und Knutti erhielten in der Flugschule Avenches von deren Chefpiloten Durafour im Verlauf des Jahrs 1911 Flugunterricht.