Nine Greenpeace activists appeared before the Paris court of appeal on June 24 for an action they carried out on the tarmac of Roissy-Charles-de-Gaulle airport in 2021. During the protest, they partially repainted the fuselage of an airplane in green to criticize the practice of "greenwashing" in air transport—when companies falsely claim to be environmentally friendly. On September 30, the court of appeal sentenced the activists to fines ranging from 400 euros with a suspended sentence to 500 euros. Greenpeace France called the sentences "symbolic," noting that compared to the original judgment, a ban on appearing in these airports under threat of imprisonment—effectively restricting their freedom of movement—was overturned. The activists painted an airplane green at Roissy-Charles-de-Gaulle airport on March 5, 2021. Their goal was to highlight what they called the "scam of the green plane." They aimed to draw attention to the overestimation of low-carbon fuels promised by the aviation industry to justify continued growth in air traffic. This criticism was supported by an investigation by Reporterre on green hydrogen, which questioned the feasibility of these claims. Sarah Fayolle, a climate campaign officer at Greenpeace France, stated, "The intensification of the climate crisis and all the records set during the summer of 2026 in terms of heatwaves, fires, and drought demonstrate once again that our action at Roissy-Charles-de-Gaulle five years ago was legitimate and necessary." Since the end of the Covid-19 pandemic, air traffic has grown rapidly, increasing greenhouse gas emissions that contribute to the climate crisis. According to Fayolle, "Each sector should instead reduce its emissions as quickly as possible." Five years after the activists' protest, the French government is seen as directly responsible for the growth of air traffic by supporting the ADP megaproject for the expansion of Roissy airport. This project would result in a 28% increase in the airport's CO2 emissions, making it currently the most climate-damaging project in France. Sacha Ruello-Jossic, a campaign officer against the expansion of Roissy airport at Rester sur Terre, criticized the government's support for the project. He emphasized that the expansion contradicts efforts to combat climate change and exacerbates environmental harm. The activists' protest, while symbolic in its legal outcome, continues to resonate as a reminder of the urgent need to address the environmental impact of air travel and infrastructure development.