The Civil Aviation Authority (CAA) has announced the establishment of the Hydrogen Working Group (H2Wo) during the Farnborough International Airshow to drive the development of hydrogen as a 'green' fuel for aviation. The CAA aims to facilitate collaboration between industry and academia as part of the 'Hydrogen Challenge,' focusing on understanding and overcoming the challenges associated with using hydrogen as an aviation fuel. The group will work on introducing hydrogen into aviation, promoting collaboration among various stakeholders to enhance its development. Emphasizing the urgency of transitioning to sustainable practices, the CAA pledged to expedite the testing, handling, and utilization of hydrogen to help the aviation industry achieve 'net zero' emissions. The H2Wo will concentrate on areas such as aircraft propulsion with hydrogen, certification processes, and airport infrastructure modifications to support hydrogen use. Sophie O’Sullivan, the CAA's head of future safety and innovation, highlighted the importance of hydrogen adoption for zero-emission flight and sustainable aviation. The CAA's initiative, supported by a significant government grant, demonstrates a commitment to innovation and safety in transitioning to greener aviation technologies. Applications to participate in the H2Wo are now open, reinforcing the industry's collective effort towards a more sustainable and environmentally friendly aviation sector.