 A graduate from the ENAC (IÉNAC L85) and holder of a Master of Science in IT and parallelism, he began his career at the Directorate General for Civil Aviation as Head of the embedded equipment department at the « STNA » (Technical Service of Air Navigation) in Paris from 1990 to 1995.He is deputy of the real-time equipment department from 1995 to 1998, then deputy Head of the technical staff office at the « DSNA » (Directorate of Air Navigation Services) from 1998 to 2002, and finally Head of the systems and methods department at the Directorate of Air Navigation Services from 2002 to 2006.Head of the Air Traffic Control center of Bordeaux (2006-2009) and staff Deputy Director of the DGAC (2009-2012), Olivier Chansou manages four departments of the DSNA South-West (Bordeaux) from 2012 to 2017.