The Airbus A380, infamous for its size and capacity, has made a comeback to the skies after a hiatus of three years, this time to test hydrogen propulsion technologies. Airbus, the European manufacturer, initiated this project to explore the feasibility of hydrogen-powered aviation through various onboard systems of the A380. With a rich history dating back to its first flight in 2005, the A380 has been a flagship for carriers like Emirates, Air France, British Airways, Qantas, and Lufthansa. Despite its success, the A380 faced challenges during the COVID-19 pandemic, leading to its retirement from many airline fleets. The final A380 rolled out to Emirates, marking the end of production. However, Airbus has innovative plans to repurpose a retired A380 into its ZEROe Demonstrator by equipping it with a hydrogen combustion engine and cryogenic tanks. The unique design of the A380 allows for the accommodation of large hydrogen tanks, a critical aspect for experimenting with hydrogen propulsion. While the idea of a fully hydrogen-powered A380 might be ambitious due to its size and weight, the research conducted through this project aims to contribute to the future of sustainable aviation. Hydrogen propulsion in aircraft is seen as a promising avenue towards achieving zero emissions in aviation, steering away from conventional fossil fuel burning. Although challenges lie ahead, the development and testing of hydrogen technologies on the A380 could pave the way for more environmentally friendly aircraft in the future, shaping the aviation industry towards greater sustainability.