22. Commission Delegated Regulation (EU) 2025/723 of 6 February 2025 supplementing Directive 2003/87/EC of the European Parliament and of the Council by laying down detailed rules for the yearly calculation of price differences between eligible aviation fuels and fossil kerosene and for the EU ETS allocation of allowances for the use of eligible aviation fuels - European Air Law (Update) View the chapter 22. Commission Delegated Regulation (EU) 2025/723 of 6 February 2025 supplementing Directive 2003/87/EC of the European Parliament and of the Council by laying down detailed rules for the yearly calculation of price differences between eligible aviation fuels and fossil kerosene and for the EU ETS allocation of allowances for the use of eligible aviation fuels by - European Air Law (Update) 22. Commission Delegated Regulation (EU) 2025/723 of 6 February 2025 supplementing Directive 2003/87/EC of the European Parliament and of the Council by laying down detailed rules for the yearly calculation of price differences between eligible aviation fuels and fossil kerosene and for the EU ETS allocation of allowances for the use of eligible aviation fuels