CORSIA
What Airlines Must Do Under CORSIA
1. MONITOR FUEL USE AND CO2 EMISSIONS
Operators must monitor CO₂ emissions from all international flights using one of the ICAO-approved methods, such as:
- Fuel Use Monitoring Methods include Method A, Method B, Block-off/block-on, Fuel Uplift or Fuel Allocation with Block Hour; or
- ICAO CORSIA CO2 Estimation and Reporting Tool (CERT)
Monitoring must follow the procedures outlined in the operator’s approved Emissions Monitoring Plan (EMP), which specifies data sources, responsible personnel, and calculation methods.
📌 The EMP must be kept up to date and aligned with ICAO SARPs (Annex 16, Vol IV) and the Environmental Technical Manual (ETM).
2. COMPILE THE ANNUAL EMISSIONS REPORT (ER)
For each calendar year, operators must prepare an Emissions Report that includes:
- Total fuel consumption for all international flights
- Associated CO₂ emissions
- Offsetting requirements
- Use of CORSIA Eligible Fuels (CEFs), if applicable
- Justification and methodology for any data gaps or use of estimation methods (where permitted)
The report must be prepared using the ICAO CORSIA CERT Tool, which ensures accurate calculations, standardized formatting, and consistency with ICAO’s reporting framework.
3. ENGAGE AN ACCREDITED VERIFICATION BODY
The Emissions Report must be independently verified before submission to the State Authority. The verification body must:
- Be accredited to ISO 14065:2020 and ISO 17029:2019 by a recognized national accreditation body
- Be competent in applying ISO 14064-3:2019 and ICAO’s specific verification requirements as set out in:
- Annex 16, Volume IV, Appendix 6 (Second Edition)
- Environmental Technical Manual (Doc 9501), Volume IV (Third Edition)
Verification ensures the report is complete, accurate, and free from material discrepancies.
4. SUBMIT TO THE STATE AUTHORITY
Once the verification is complete, both the aeroplane operator and the verification body must independently submit the verified Emissions Report and associated Verification Report to the relevant State Authority (e.g., CAAM in Malaysia).
The State Authority will then perform an Order of Magnitude Check, comparing the verified data with other available information before forwarding it to the ICAO CORSIA Central Registry (CCR).
📅 Deadline for 2024 Reporting Year:
✅ 30 April 2025, as specified under ICAO ETM Vol IV, Part II, Chapter 2, 2.4.1.5
Recommended Best Practice: Internal Pre-Verification
- Identify data inconsistencies early
- Improve data quality and completeness
- Ensure a smoother and faster external verification process
