On December 9, the last ZAL Innovation Talk of 2021 was about THE key questions, about the future of aviation. For example, what could be the milestones of the next five years? Where are the challenges that could remain or even increase until the end of 2026? From different expert perspectives, Dr. Susan Ying, SVP of Global Operations at California-based electric flight startup Ampaire, and Bjorn Fehrm, lead technical analyst at Leeham Co. joined ZAL’s CEO Roland Gerhards to discuss hydrogen propulsion, all-electric or hybrid-electric flight, or even the next generation of current propulsion technologies. As always, the Innovation Talk was moderated by Lukas Kaestner from Hamburg Aviation and Sustainable Aero Lab.