His career began at the Centre d'Essais de Matériels Aériens (CEMA) of Villacoublay, an aircraft test center, in 1935.
In 1941, he moved to the Centre d'Essais en Vol de Marignane, where he made his early attempts at constructing a flight data recorder.
Unlike modern recorders, Hussenot's early models had the particularity of storing the information not on a magnetic band, but on an eight meter long by 88 mm wide photographic film, scrolling in front of a thin spot of light deviated by a mirror to represent the data.
In July 1945, Hussenot was appointed as an engineer at the Brétigny-sur-Orge flight test center (Centre d'Essais en Vol de Brétigny-sur-Orge) as the director of the Methods and Try-Outs service (Service des Méthodes et Essais).
In 1947 Hussenot founded the SFIM (Société Française des Instruments de Mesure) with his associate Marcel Ramolfo, to market his flight data recorder.