ICAO Assemblies

The aviation industry’s most enduring global partnership is with the International Civil Aviation Organization (ICAO), the specialised United Nations agency with the unique role to help set standards for the global aviation industry. ICAO’s 193 Member States meet every three years in the ICAO Assembly – the organisation’s sovereign body – to negotiate and establish the worldwide policy of the organisation for the upcoming triennium. The Air Transport Action Group participates in the ICAO assemblies and works closely with ICAO on all issues pertaining to aviation and the environment.



40th ICAO Assembly 2019

ICAO Member States and a large number of international organisations meet from 24 September to 4 October 2019 in Montreal for ICAO’s 40th Assembly.

Position Papers

The Air Transport Action Group coordinated three cross-industry working papers for the 40th ICAO Assembly, which will be presented jointly on behalf of the industry associations ACI, CANSO, IATA, IBAC and ICCAIA, representing global airports, air navigation service providers, airlines, business aviation and aerospace industry associations.

The working papers cover the industry’s continued support for CORSIA and emphasise that CORSIA was adopted as the only market-based measure applied to CO2 emissions from international aviation, a request by the industry to the ICAO Council to develop a long-term climate goal for international civil aviation for adoption at the 41st ICAO Assembly and aviation’s contribution to the United Nations 2030 Agenda for Sustainable Development. 

Media releases

Downloads and Links


39th ICAO Assembly 2016

The world's governments met in Montreal from 27 September to 6 October 2016 for the 39th ICAO Assembly. The key item for discussion was the agreement on a global market-based measure for international aviation.

Following six years of negotiations, governments adopted the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) – the world’s first market mechanism addressing climate change from any industrial sector. The global aviation industry coordinated by the Air Transport Action Group was instrumental in proposing the plan and is now supporting States to implement it.

CORSIA aims to stabilise net CO2 emissions from international civil aviation at 2020 levels by offsetting the growth in emissions. The international standards for the implementation of CORSIA apply to all ICAO Member States since 1 January 2019.

CORSIA will mitigate around 2.5 billion tonnes of CO2 between 2021 and 2035, which is an annual average of 164 million tonnes of CO2. CORSIA is part of a series of actions the global aviation industry is taking to reduce its carbon emissions, which includes investing in new technology, scaling up the use of sustainable aviation fuels, improving operational performance of aircraft and using more efficient infrastructure.

Media Releases

Our Sustainable Future Starts Now

As part of our industry campaign to encourage commitment from governments, we have been speaking to young aviation professionals about their sustainable development motivations and the need for governments to agree to a global market mechanism at the 39th ICAO Assembly. The main compilation video is seen below, but the full set of interviews can be found here

Aviation’s future voices from Aviation Benefits on Vimeo.


38th ICAO Assembly 2016

The world's governments met in Montreal in September 2013 for the 38th ICAO Assembly. This event, taking place every three years, brings together national aviation experts to discuss various issues of importance to the world's civil aviation. One of the most high-profile topics at the 2013 Assembly was climate change and the need to develop a global market-based measure to deal with aviation's climate change impact.

The aviation industry, through ATAG, developed a joint, global, position on market-based measures for the 38th ICAO Assembly.