/en en /en/worldwide/aerospace/news/space-based-ads-b-progress-update Aireon Navigates Early Hurdles To Oceanic Free Flight. A series of diamond shapes over the ocean—areas where there is no air traffic—signals room for improvement in cruise efficiency for airlines.. 31 May 2017 2716375 /sites/default/files/database/d7/assets/images/atm_1.png