39th ICAO Assembly


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 an agreement on the Carbon Offsetting and Reduction Scheme for International Aviation (aka the CORSIA). The aviation industry is fully engaged and supportive of the scheme. On this page you will find resources for background information on the scheme, press materials and statements from the industry, coordinated by the Air Transport Action Group.




Following six years of negotiations, governments meeting at the International Civil Aviation Organization (ICAO) are finalising the design elements of a global market-based measure for international aviation. It is part of a series of actions the aviation industry is taking to reduce its carbon emissions which includes investing in new technology, scaling up the use of sustainable alternative fuels, improving operational performance of aircraft in the fleet already and using more efficient infrastructure.

The carbon offsetting and reduction scheme for international aviation (CORSIA) has been agreed by government negotiators at the 39th ICAO Assembly. The CORSIA will be the world’s first market mechanism for dealing with climate change from any industrial sector. The global aviation industry, coordinated by the Air Transport Action Group (ATAG) has been instrumental in proposing the plan and is now encouraging States to support it.

The draft text which has emerged from the most recent informal talks was forwarded to the ICAO Council and is now being presented to the Assembly itself, where discussions will continue. According to the draft text, the CORSIA would now consist of a global offsetting scheme to be applied to international aviation in several phases:

  • 2021 to 2023 – a ‘pilot’ voluntary phase of countries which choose to be part of the scheme.
  • 2024 to 2026 – the first implementation phase, also on a voluntary basis.
  • 2027 to 2035 – the second phase which will include most States except least developed, small island states and countries with a small amount of international air traffic (currently proposed at less than 0.5% of global traffic). This second phase has triennial technical adjustments to the distribution of obligations between individual airlines, moving from a collective approach towards more of an individual approach.


  • The cross-industry position paper can be found here.
  • A cross-industry Working Paper for the ICAO Assembly on our general views of the CORSIA can be found here.
  • A cross-industry Working Paper for the ICAO Assembly encouraging States to voluntarily participate in the CORSIA can be found here.
  • A cross-industry Working Paper for the ICAO Assembly outlining the role aviation plays in sustainable development can be found here.




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. And a small book of quotes from these colleagues can be downloaded here.


Aviation’s future voices from Aviation Benefits on Vimeo.