Feasibility of a long term global aspirational goal (LTAG) for international aviation


In its 40th Session (2019), the ICAO Assembly requested the ICAO Council to continue to explore the feasibility of a long-term global aspirational goal for international aviation (LTAG), through conducting detailed studies assessing the attainability and impacts of any goals proposed, including the impact on growth as well as costs in all countries, especially developing countries, for the progress of the work to be presented to the 41st Session of the ICAO Assembly (2022). Assessment of long-term goals should include information from Member States on their experiences working towards the medium term goal (Reference: ICAO Assembly Resolution A40-18, paragraph 9). 

​LTAG Report


The LTAG Report present the background, methodologies, results and interpretations of the LTAG feasibility study developed by the ICAO CAEP. For transparency and comprehensiveness, a set of Appendixes is also available to provide more detailed information on modelling approaches, methodologies, models, assumptions, and the results.


The LTAG report is now available, in all the 6 ICAO Languages.


Council briefing - LTAG report


A briefing outlining the approach, methodology, and high-level results and observations of the LTAG analysis is available at ICAO.TV. 

​Briefing on LTAG Feasibility Report by CAEP - Watch on ICAO.TV

Videos - LTAG Report Introduction

A description of the LTAG report is provided in the following videos, also in all the 6 ICAO Languages.


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2022 LTAG GLADs - 28 March to 8 April 2022

The ICAO Global Aviation Dialogues on Long-term Aspirational Goal (LTAG-GLADs) aim to raise awareness on the ICAO work on LTAG and facilitate the exchange of views amongst Member States. Click here for more information.
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The ongoing work is summarized in the diagram below: 
LTAG-TG_Diagram_v11.jpg

The general timeline of LTAG work is provided in the image below:

LTAG timelines

Work is ongoing in ICAO to:

  • Facilitate the involvement of relevant stakeholders outside the aviation sector to collect all information needed to support the exploration of the feasibility of a LTAG.
  • Ensure that the best expertise is available for the assessment of the data, for the development of scenarios and for the assessment of the cost and benefits of scenarios.
  • Keep ICAO Governing bodies informed and consulted during the process
  • Ensure a transparent and inclusive process when consulting with States; and
  • Provide a forum for the agreement of the possible options prior to the next ICAO Assembly.

All relevant stakeholders are invited to contribute to this ICAO work by submitting information through the ICAO Stocktaking Process.


ICAO is also working to share publically-available information on in-sector CO2 emissions reductions activities through the ICAO in-sector aviation CO2 emissions reduction initiatives tracker tool. This tracker tool compliments the LTAG work by showcasing activites related to three streams of work: technology, operations, and sustainable aviation fuels. 



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