During its 41st Assembly in September/October 2021, the International Civil Aviation Organization formally aligned the aviation industry with the widely adopted global goal to achieve net zero carbon dioxide (CO2) emissions by 2050. In June 2023, the International Air Transport Association (IATA) unveiled five roadmaps for the industry to reach the ambitious target, covering aircraft technology, energy/new fuels infrastructure, operations, policy and finance. IATA's director general Willie Walsh said: "The roadmaps are the first detailed assessment of the key steps necessary to accelerate the transition to net zero by 2050." Walsh continued: "The roadmaps are not just for airlines. Governments, suppliers and financiers cannot be spectators in aviation's decarbonisation journey. They have skin in the game. "The roadmaps are a call to action for all aviation's stakeholders to deliver the tools needed to make this fundamental transformation of aviation a success." According to the association, "the roadmaps were not developed in isolation". University College London's Air Transportation Systems Laboratory contributed a modelling tool to the association's research.
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