THE INTERNATIONAL REVIEW OF AIR TRAFFIC TECHNOLOGY AND MANAGEMENT DIGITAL FRONTIERS How a new set of flight rules to complement VFR and IFR will expand access to airspace for new types of aircraft Can artificial intelligence provide the answer to the controller shortage? TRUST IN AI CRUISE CONTROL Data sharing to unlock flight route optimisation for emissions reduction SATNAV’S SAVIOUR How a young US Air Force colonel saved GPS and helped shape the modern world