# Directive 2003/87/EC of the European Parliament and of the Council of 13 October 2003 establishing a system for greenhouse gas emission allowance trading within the Union and amending Council Directive 96/61/EC (Text with EEA relevance), Division 14: The verifier shall in particular ascertain that:

Extent: E+W+S+N.I.

(a) all flights falling within an aviation activity listed in Annex I have been taken into account. In this task the verifier shall be assisted by timetable data and other data on the aircraft operator’s traffic including data from Eurocontrol requested by that operator;
(b) there is overall consistency between aggregated fuel consumption data and data on fuel purchased or otherwise supplied to the aircraft performing the aviation activity.

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Source: https://www.legislation.gov.uk/eudr/2003/87/annex/V/part/B/division/2/division/14 (the official version)
Page: https://openlegislation.uk/eu-directive-2003-87/annex-V/part-B/division-2/division-14
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.