Actually, it was exactly the same in France where we operate. It is written that H2 is forbidden but we asked the civil aviation authority and they told us that

Actually, it was exactly the same in France where we operate. It is written that H2 is forbidden but we asked the civil aviation authority and they told us that we just need to ask for the autorization to use this gas when we organize our flight approval. We asked the same question to the EU aviation authority and they told us that were not seeing any problem with using H2 as a lifting gas because of the great record of the Gordon Bennett Cup: https://balloonfiesta.com/Gordon-Bennett-2023 https://balloonfiesta.com/Gordon-Bennett-2023. Which had no incident in many years.