Airbus is currently conducting a flight-test campaign to gain a deeper understanding of the water vapor exhaust produced by a hydrogen fuel cell system. The focus of this study is to determine if this exhaust will result in the creation of a condensation trail. This research is a crucial part of Airbus's ZEROe project, which is targeting 2035 for the introduction of hydrogen-powered commercial aircraft. The company is showcasing its commitment to sustainable aviation by exploring the feasibility of hydrogen fuel cells in aircraft operations. Thierry Dubois, an experienced aerospace journalist with a background in fluid dynamics, is closely following Airbus's endeavors in this area. Dubois, renowned for his expertise in technology within the European aerospace sector, is also the editor-in-chief of Aviation Week's ShowNews. His insights provide valuable information on the advancements and challenges in implementing hydrogen fuel cell technology in the aviation industry. This article, featured in Aviation Daily's market briefing, sheds light on the significance of Airbus's flight tests and research on fuel cells. By investigating the potential of hydrogen fuel cell systems to produce condensation trails, Airbus aims to address environmental concerns and enhance the sustainability of air transport. This detailed exploration of fuel cell technology underscores Airbus's proactive approach towards achieving greener aviation practices, aligning with the broader industry trend towards reducing carbon emissions and embracing renewable energy sources.