ESNAH is a Belgian company, initially active in the field of aviation safety. ESNAH has developed a new navigation aid system concept for student pilots, private and commercial pilots as well as for aircraft owners and operators. 1° SkyLiberty Project It provides a global interface between aircraft operators and pilots for sharing real time information. Three items compose it: - SkyLiberty: A mobile application working on iOS and Android which provides to pilots and students all tools, reliable and necessary data in order to create, realize and manage great navigations according to safety and environmental recommendations.