1、 1 1 Executive Summary Transitioning towards net-zero carbon dioxide(CO2)emissions by 2050 is the greatest challenge for the air transport industry.The aviation industry took the momentous decision to reach net zero CO2 emissions in 2021,followed by ICAO member states in 2022.To achieve this ambitio

2、n,a basket of measures that covers aviation energy transition,aircraft technology breakthrough,operational improvements,market-based measures,and policy support is required.Given the significant uncertainties associated with this journey,there will not be a single universal pathway for the sector to

3、 reach net zero by 2050.Hence,various organizations have developed net-zero CO2 pathways for air transport,including the International Air Transport Association(IATA),the International Energy Agency(IEA),the International Civil Aviation Organization(ICAO),the Air Transport Action Group(ATAG),the Int

4、ernational Council on Clean Transportation(ICCT),Mission Possible Partnership(MPP),DESTINATION 2050,and the U.S.Federal Aviation Administration(FAA).Meanwhile,numerous academic studies on aviation net-zero transition have also been published in leading scientific journals.This report provides the fi

5、rst comprehensive review of fourteen leading net-zero transition roadmaps for the aviation sector.By breaking down the massive amount of information discussed in those roadmaps into various aspects for comparison,the report aims to help airlines and stakeholders better understand their critical diff

6、erences and similarities.Specifically,the report compares the selected roadmaps in terms of their scope,key input assumptions,modeled aviation energy demand,respective CO2 emissions,and the emissions reduction potential by different mitigation levers.Some key findings from this analysis include:1)Po