Other than mandating fuel suppliers to supply an increasing share of SAF at Union airports, ReFuelEU’s Article 5 also seeks to curb the practice of fuel tankering. Thus, the regulation obligates aircraft operators to ensure that the yearly quantity of fuel uplifted at a given Union airport is at least 90% of their yearly aviation fuel required, as a measure to limit tankering. This obligation, according to the rationale of European regulators, avoids the excessive emissions related to extra...