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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 (Assimilated Law)RecitalsChapter I General provisions (arts. 1-10)Section 1 Subject matter and definitions (arts. 1-3)Article 1 Subject matterArticle 2 ScopeArticle 3 DefinitionsSection 2 General principles (arts. 4-10)Article 4 General obligationArticle 5 CompletenessArticle 6 Consistency, comparability and transparencyArticle 7 AccuracyArticle 8 Integrity of methodologyArticle 9 Continuous improvementArticle 10 CoordinationChapter II Monitoring plan (arts. 11-18)Section 1 General rules (arts. 11-16)Article 11 General obligationArticle 12 Content and submission of the monitoring planArticle 13 Standardised and simplified monitoring plansArticle 14 Modifications of the monitoring planArticle 15 Approval of modifications of the monitoring planArticle 16 Implementation and recordkeeping of modificationsSection 2 Technical feasibility and unreasonable costs (arts. 17-18)Article 17 Technical feasibilityArticle 18 Unreasonable costsChapter III Monitoring of emissions of stationary installations (arts. 19-49)Section 1 General provisions (arts. 19-23)Article 19 Categorisation of installations and source streamsArticle 20 Monitoring boundariesArticle 21 Choice of the monitoring methodologyArticle 22 Monitoring methodology not based on tiersArticle 23 Temporary changes to the monitoring methodologySection 2 Calculation-based methodology (arts. 24-39)Subsection 1 General (arts. 24-26)Article 24 Calculation of emissions under the standard methodologyArticle 25 Calculation of emissions under the mass balance methodologyArticle 26 Applicable tiersSubsection 2 Activity data (arts. 27-29)Article 27 Determination of activity dataArticle 28 Measurement systems under the operator's controlArticle 29 Measurement systems outside the operator's own controlSubsection 3 Calculation factors (arts. 30-35)Article 30 Determination of calculation factorsArticle 31 Default values for calculation factorsArticle 32 Calculation factors based on analysesArticle 33 Sampling planArticle 34 Use of laboratoriesArticle 35 Frequencies for analysesSubsection 4 Specific calculation factors (arts. 36-37)Article 36 Emission factors for CO2Article 37 Oxidation and conversion factorsSubsection 5 Treatment of biomass (arts. 38-39)Article 38 Biomass source streamsArticle 39 Determination of biomass and fossil fractionSection 3 Measurement-based methodology (arts. 40-46)Article 40 Use of the measurement-based monitoring methodologyArticle 41 Tier requirementsArticle 42 Measurement standards and laboratoriesArticle 43 Determination of emissionsArticle 44 Data aggregationArticle 45 Missing dataArticle 46 Corroborating with calculation of emissionsSection 4 Special provisions (arts. 47-49)Article 47 Installations with low emissionsArticle 48 Inherent CO2Article 49 Transferred CO2Chapter IV Monitoring of emissions and tonne-kilometre data from aviation (arts. 50-56)Article 50 General provisionsArticle 51 Submission of monitoring plansArticle 52 Monitoring methodology for emissions from aviation activitiesArticle 53 Specific provisions for biomassArticle 54 Small emittersArticle 55 Sources of uncertaintyArticle 56 Determination of tonne-kilometre dataChapter V Data management and control (arts. 57-66)Article 57 Data flow activitiesArticle 58 Control systemArticle 59 Quality assuranceArticle 60 Quality assurance of information technologyArticle 61 Segregation of dutiesArticle 62 Internal reviews and validation of dataArticle 63 Corrections and corrective actionArticle 64 Out-sourced processesArticle 65 Treatment of data gapsArticle 66 Records and documentationChapter VI Reporting requirements (arts. 67-73)Article 67 Timing and obligations for reportingArticle 68 Force majeureArticle 69 Reporting on improvements to the monitoring methodologyArticle 70 Determination of emissions by the competent authorityArticle 71 Access to informationArticle 72 Rounding of dataArticle 73 Ensuring consistency with other reportingChapter VII Information technology requirements (arts. 74-75)Article 74 Electronic data exchange formatsArticle 75 Use of automated systemsChapter VIII Final provisions (arts. 76-77)Article 76 Repeal of Decision 2007/589/EC and transitional provisionsArticle 77 Entry into forceAnnex I Minimum content of the monitoring plan (Article 12(1))Annex II Tier thresholds for calculation-based methodologies related to installations (Article 12(1))Annex III Monitoring methodologies for aviation (Article 52 and Article 56)Annex IV Activity-specific monitoring methodologies related to installations (Article 20(2))Annex V Minimum tier requirements for calculation-based methodologies involving Category A installations and calculation factors for commercial standard fuels used by Category B and C installations (Article 26(1))Annex VI Reference values for calculation factors (Article 31(1)(a))Annex VII Minimum frequency of analyses (Article 35)Annex VIII Measurement-based methodologies (Article 41)Annex IX Minimum data and information to be retained in accordance with Article 66(1)Annex X Minimum content of Annual Reports (Article 67(3))Done at
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Version status: In force | Document consolidation status: Assimilated law updated to reflect all known changes
This version in force from: 31 December 2020

Article 55 Sources of uncertainty

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).

2. [deleted]

3. [deleted]

4. [deleted]

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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