ZeroAvia has been selected to join the UK Civil Aviation Authority's Hydrogen Challenge programme to pave the way for the adoption of hydrogen as a zero-carbon aviation fuel. Collaborating with the CAA, ZeroAvia will focus on understanding the safety and regulatory aspects necessary for the commercial utilization of hydrogen, particularly in certifying its ZA600 hydrogen-electric powertrain designed for aircraft with up to 20 seats. This initiative includes exploring secure hydrogen fuel storage, distribution, and refueling practices both at airfields and on aircraft. The next phase of the Hydrogen Challenge will involve developing innovative aircraft designs utilizing hydrogen fuel cell power systems to minimize carbon emissions, enhancing airport infrastructure, conducting scientific research with prominent aeronautical institutes, and supporting flight trials and safety assessments.