Yes, the FCPF Standard has been approved by the UN International Civil Aviation Organization (ICAO) to supply CORSIA Eligible Emissions Units for the 2021- 2023 compliance period (pilot phase).  

One of ICAOs mandates is the setting of environmental standards to address emissions from international aviation (domestic flights are covered under countries’ nationally determined contributions). CORSIA is the first industry-wide market-based measure to reduce emissions. It requires that emissions above 2020-levels must be offset. 70 countries, representing around 90% of international aviation emissions, participate in the voluntary phase (2021-2026), with additional countries joining in the mandatory phase (2027-2035).

It is estimated that around 2.5 billion tons of CO2-equivalent is to be offset between 2021-2035. Given the stringent requirements on FCPF ER Credits under the FCPF Standard, which ensure environmental integrity (additional and real ERs, avoidance of double counting, ensuring permanence, avoidance of leakage, and increased accuracy), FCPF ER Credits are eligible under CORSIA and can be purchased by airlines to offset emissions.