ICAO has released the Fourth Edition of its CORSIA Approved Sustainability Certification Schemes document, referenced under Annex 16 Volume IV. While the framework itself remains unchanged, the latest update expands the list of approved certification schemes, giving the aviation sector greater flexibility in demonstrating compliance with CORSIA sustainability requirements.
What Has Changed
The most significant update in this edition is the addition of Bonsucro as an ICAO approved Sustainability Certification Scheme.
Previously, the approved schemes included:
- International Sustainability and Carbon Certification
- Roundtable on Sustainable Biomaterials
- ClassNK SCS
The latest edition now adds Bonsucro, making it the fourth approved certification scheme under CORSIA.
Why This Matters
The inclusion of Bonsucro is more than just an expanded list. It introduces a certification pathway specifically covering sugarcane based sustainable aviation fuel supply chains and associated Alcohol to Jet and Synthesized Iso Parafins production processes.
This creates additional certification opportunities for fuel producers working with these feedstocks while increasing confidence in sustainability verification across a broader section of the aviation fuel market.
A Positive Step For Sustainable Aviation
Rather than changing compliance requirements, this update strengthens the certification ecosystem supporting CORSIA. More approved certification schemes mean greater accessibility, increased flexibility for fuel producers, and wider recognition of credible sustainability practices.
As sustainable aviation fuel production continues to diversify, expanding the range of approved certification bodies helps maintain consistency while encouraging innovation across global supply chains.
Conclusion
The Fourth Edition represents an evolutionary improvement rather than a regulatory overhaul. By approving Bonsucro, ICAO has broadened the available certification landscape and reinforced the credibility of sustainable aviation fuel certification under CORSIA. For aviation stakeholders, this is a practical step that supports future growth while maintaining robust sustainability standards.
Download Document File Here: CORSIA Approved Sustainability Certification Schemes (Fourth Edition)

