environmental-protection/42nd Session of the ICAO Assembly

42nd Session of the ICAO Assembly - Environment

A42 Resolutions

Resolution A42-20: Consolidated statement of continuing ICAO policies and practices related to environmental protection - General provisions, noise and local air quality
Resolution A42-21: Consolidated statement of continuing ICAO policies and practices related to environmental protection - Climate change
Resolution A42-22: Consolidated statement of continuing ICAO policies and practices related to environmental protection - Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA)

A42 Working Papers on Environmental Protection

Overview of A42 Working Papers on Environmental Protection presented by the Council of ICAO

A42-WP/24: Consolidated Statement of Continuing ICAO Policies and Practices Related to Environmental Protection General Provisions, Noise and Local Air Quality	Submitted for adoption is a proposal for the revisions to Assembly Resolution A41-20, Consolidated statement of continuing ICAO policies and practices related to environmental protection General provisions, noise and local air quality. It reflects developments since A41 on civil aviation and the environment, including trends in aircraft noise and emissions, the development of SARPs and guidance, and relevant developments in other UN bodies and international organizations.
A42-WP/25: Climate Change Global Framework for SAF, LCAF and Other Aviation Cleaner Energies	Reports on the progress made by ICAO relating to international aviation and climate change, focusing on the implementation of the LTAG. It highlights the outcomes arising from the CAAF/3, namely the ICAO Global Framework for SAF, LCAF and other Aviation Cleaner Energies, and the ICAO Roadmap for the implementation of the CAAF/3 outcomes and the LTAG.
A42-WP/26: Climate Change Adaptation and Science	This paper reports on ICAO's work relating to international aviation and climate change since the last Assembly, with a focus on the progress and next steps on climate change adaptation and resilience, and enhancing scientific understanding of aviation s climate impacts, as well as cooperation and relevant developments in other UN bodies and international organizations.
A42-WP/27: Consolidated Statement of Continuing ICAO Policies and Practices Related to Environmental Protection Climate Change	Submitted for adoption is a proposal for the revisions to Assembly Resolution A41-21, Consolidated statement of continuing ICAO policies and practices related to environmental protection Climate change, which has been revised in light of developments since A41 on international aviation and climate change.
A42-WP/28: Consolidated Statement of Continuing ICAO Policies and Practices Related to Environmental Protection Carbon Offsetting and Reduction Scheme for international Aviation (CORSIA)	Submitted for adoption is a proposal for the revisions to Assembly Resolution A41-22, Consolidated statement of continuing ICAO policies and practices related to environmental protection Carbon Offsetting and Reductions Scheme for International Aviation (CORSIA), which has been revised considering developments since A41 on the implementation of CORSIA.

Long-term global aspirational goal for international aviation (LTAG)

The 41st Session of the ICAO Assembly in October 2022 adopted the LTAG for international aviation of net-zero carbon emissions by 2050 in support of the UNFCCC Paris Agreement's temperature goal. This is a historic agreement that reinforces the leadership of ICAO on issues relating to international aviation and climate change.

In November 2023, just one year after the Assembly, the Third ICAO Conference on Aviation and Alternative Fuels (CAAF/3) adopted the ICAO Global Framework for Sustainable Aviation Fuels (SAF), Lower Carbon Aviation Fuels (LCAF) and other Aviation Cleaner Energies (Appendix A of A42-WP/25). Under the ICAO Global Framework, ICAO and its Member States have agreed to strive to achieve a collective global aspirational Vision to reduce CO2 emissions in international aviation by 5 per cent by 2030, through the use of aviation cleaner energies.

Details and developments related to the implementation of the LTAG and ICAO Global Framework are provided in A42-WP/25 and A42-WP/27.

ICAO Roadmap for the implementation of the CAAF/3 outcomes and the LTAG: Four Building Blocks

In June 2024, the Council further approved the ICAO Roadmap for the implementation of the CAAF/3 outcomes and the LTAG (Appendix B of A42-WP/25). ICAO is making progress on the implementation of the ICAO Roadmap, whilst recognizing the importance of making a balanced progress between the four interdependent Building Blocks of 1) policy and planning, 2) regulatory framework, 3) implementation support, and 4) financing. Materials and developments related to the four building blocks are provided below.

	Building Block 1 (Policy and Planning) LTAG Monitoring and Reporting Methodology Details can be found in Appendix C of A42-WP/25 State Action Plans ICAO Cleaner Energy Tacker Tools Annual LTAG Stocktaking: 2025 ICAO Aviation Climate Week Details can be found in Appendix D of A42-WP/25
	Building Block 2 (Regulatory Framework) CORSIA Eligible Fuels as the accepted basis for the eligibility of SAF, LCAF and other aviation cleaner energies used in international aviation. Details can be found in Appendix D of A42-WP/25
	Building Block 3 (Implementation Support) ICAO Assistance, Capacity-building and Training for SAF (ACT-SAF) programme Details can be found in Appendix E of A42-WP/25
	Building Block 4 (Financing) ICAO Finvest Hub Details can be found in Appendix F of A42-WP/25 Consideration of a climate finance initiative or funding mechanism under ICAO Details can be found in Appendix G of A42-WP/25

JOIN ACT-SAF NOW!

Participation is open to ICAO Member States, Organizations and Stakeholders interested in taking action to develop SAF initiatives. For those interested in further information, an e-mail can be sent to the Office of Environment (officeenv [at] icao.int).

Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA)

The 39th Session of the ICAO Assembly in 2016 agreed on CORSIA as the first global market-based measure adopted by any industry sector to address CO₂ emissions from international activity. It was designed to complement the basket of mitigation measures to reduce CO₂ emissions from international aviation, including aircraft technologies, operational improvements and sustainable fuels.

CORSIA is the only global market-based measure applying to CO₂ emissions from international aviation so as to avoid a possible patchwork of duplicative State or regional Market-Based Measures, thus ensuring that international aviation CO₂ emissions should be accounted for only once.

Details and developments related to CORSIA are provided in A42-WP/28.

JOIN ACT-CORSIA NOW!

Participation is open to ICAO Member States to support CORSIA implementation. For States interested in further information, an e-mail can be sent to the Office of Environment (officeenv [at] icao.int (officeenv[at]icao[dot]int)).

Noise and Local Air Quality

The Thirteenth Meeting of the Committee on Aviation and Environmental Protection CAEP (CAEP/13) held in February 2025 agreed on several recommendations as a result of its technical and analytical work over the last triennium, including the integrated dual stringency Standards for noise and CO₂ emissions.

Details are available in A42-WP/24 and on ICAO's website on Aircraft Noise and Local Air Quality.

Climate Change Adaptation and Science

ICAO Council's Committee on Aviation Environmental Protection (CAEP) has also undertook a number of activities on climate change adaptation and resilience. In February 2025, CAEP updated the Climate Adaptation Synthesis Report by compiling the latest information on the projected climate impacts on the aviation sector and outlining possible adaptation and resilience measures. Further Information on climate change adaptation is available on ICAO's website.

Work related to non-CO₂ aviation emissions and contrails has also progressed. The ICAO Symposium on Non-CO₂ Aviation Emissions was organized in 2024 to take stock of the scientific knowledge on non-CO₂ aviation emissions and their impacts, and share relevant work undertaken by ICAO and relevant stakeholders. Details can be found on ICAO s website on non-CO₂ aviation emissions.

A42-WP/26 also covers the recent developments in climate change adaptation and non-CO₂ emissions.

Resources

	2025 ICAO Environmental Report To read the report, click here.
	A42 Skytalks will be broadcasted live on ICAO TV
	ICAO's Aviation's Cleaner Energy video Click here to watch the video.
	ICAO's Progress and Achievements in Environmental Protection video Click here to watch the video.
	Leaflet To read the leaflet, click here.