# Commission Regulation (EU) No 601/2012 of 21 June 2012 on the monitoring and reporting of greenhouse gas emissions pursuant to Directive 2003/87/EC of the European Parliament and of the Council (Text with EEA relevance) (repealed), Article 55: Sources of uncertainty

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

1. The aircraft operator shall consider sources of uncertainty and their associated levels of uncertainty when selecting the monitoring methodology pursuant to Article 52(2).
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5. The aircraft operator shall regularly perform suitable control activities, including cross-checks between the fuel uplift quantity as provided by invoices and the fuel uplift quantity indicated by on-board measurement, and take corrective action if notable deviations are observed.

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Source: https://www.legislation.gov.uk/eur/2012/601/article/55 (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-601/article-55
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.