The CORSIA Central Registry (CCR) is a database that is used by States to submit CORSIA-specific information and data to ICAO in accordance with the provisions of Annex 16, Volume IV and the timeline in its Appendix 1.
This ICAO CORSIA Implementation Element is reflected in the following five ICAO documents that are referenced in Annex 16, Volume IV.
ICAO document “CORSIA Central Registry (CCR): Information and Data for the Implementation of CORSIA”
This an umbrella document for the following three ICAO documents, which contain information that supports the implementation of CORSIA. These ICAO documents are approved by the ICAO Council.
CORSIA Aeroplane Operator to State Attributions
| Description | This ICAO document contains a list of aeroplane operators and the State to which they are attributed. |  |
| Current edition | Ninth edition (December 2024) – click here. Click here for a searchable list of the aeroplane operators included in this ICAO document. | |
| Past editions | Previous editions of this ICAO document are available here. |
CORSIA 2020 Emissions
| Description | This ICAO document contains the international aviation CO2 emissions that are used to determine a new entrant. |  |
| Current edition | Second edition (October 2022) – click here. | |
| Past editions | The first edition of this ICAO document is available here. |
CORSIA Annual Sector’s Growth Factor (SGF)
| Description | This ICAO document contains the Sector’s Growth Factor (SGF) for a specific year starting in 2021. States use the SGF to determine the offsetting requirements of the aeroplane operator(s) attributed to them for the specific year. |  |
| Current edition | Fourth edition (October 2025) – click here. Note — The ICAO Secretariat is in the process of revising the CORSIA Annual Sector’s Growth Factor for year 2024 (SGF2024); the revision process may result in a decrease of the SGF2024 value, with such decrease estimated to be within a range of 0 - 2.0 %. In the event of a revised SGF2024 value being applicable, a revision to the fourth edition of the ICAO document “CORSIA Annual Sector’s Growth Factor (SGF)” will be published by 12 December 2025. | |
| Past editions | Previous editions of this ICAO document are available here. |
ICAO document “CORSIA Central Registry (CCR): Information and Data for Transparency”
This ICAO document provides information that is required to be published in order to ensure transparency. These ICAO documents are approved by the ICAO Council.
Part I: List of Verification Bodies Accredited in States
| Description | This ICAO document contains a list of verification bodies and the State to which they are attributed. |  |
| Current edition | Twelfth edition (December 2024) - click here. | |
| Past editions | Previous editions of this ICAO document are available here. |
Part II: Total CO2 Emissions for 2019 Aggregated for all Aeroplane Operators on each State Pair
| Description | This ICAO document contains 2019 CO2 emissions data required for the calculation of the CORSIA baseline. |  |
| Current edition | Second edition (October 2022) – click here. Click here for an Excel version of the data. | |
| Past editions | The first edition of this ICAO document is available here. Click here for an MS Excel previous edition of the data included in the first edition of Part II of this ICAO document. |
Part III: Total Annual CO2 Emissions and Information for Aeroplane Operators
| Description | This ICAO document contains information and data for each reporting year from 2021. |  |
| Current edition | Fourth edition (October 2025) containing information and data for reporting year 2024 – click here. Click here for a MS Excel version of the data for State pairs and here for aeroplane operators. | |
| Past editions | Previous edition of Part III of this ICAO document is available here. |
Part IV: Information on CORSIA Eligible Fuels (CEF) Claimed
| Description | This ICAO document is published following the reporting of relevant data by States to ICAO, as per the timeline defined in Annex 16, Volume IV, Appendix 1. Details on the information that are published in this ICAO document can be found in Annex 16, Volume IV, Appendix 5, Note under Table A5-6. |
| Current edition | First edition (October 2025) containing information and data for reporting year 2024 – click here |
Part V: Information on Total Offsetting Requirements and Quantity of Emissions Units Cancelled
| Description | This ICAO document will be published following the reporting of relevant data by States to ICAO, as per the timeline defined in Annex 16, Volume IV, Appendix 1. Details on the information that will be included in this ICAO document can be found in Annex 16, Volume IV, Appendix 5, Note 2 under Table A5-8. |
Methodology for ICAO-level Gap Filling
Click here to download a description of the methodology that has been developed by ICAO to fill the emissions gaps for States that have not submitted their emissions reports in accordance with the timeline as defined in Appendix 1 to Annex 16, Volume IV. The estimated CO2 emissions are used to calculate the total sectoral CO2 emissions and (from 2022 onwards) the Sectoral Growth Factor in a given year, consistent with Annex 16, Volume IV, Part II, Chapter 2, 2.5.2.2.