# Commission Regulation (EU) No 965/2012 of 5 October 2012 laying down technical requirements and administrative procedures related to air operations pursuant to Regulation (EC) No 216/2008 of the European Parliament and of the Council, Division (b): The operator must ensure that the fuel or energy planning of flights is based upon at least the following:

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

(1)procedures contained in the operations manual;
(2)current aircraft specific data derived from a fuel or energy monitoring system or if that is not available, data provided by the aircraft manufacturer; and
(3)the operating conditions under which the flight is to be conducted including:
(i)aircraft fuel or energy consumption;
(ii)anticipated masses;
(iii)anticipated weather conditions;
(iv)the effect of deferred maintenance items or configuration deviations, or both;
(v)anticipated delays.

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Source: https://www.legislation.gov.uk/eur/2012/965/annex/VI/division/subpart+b/division/nccop131/division/b (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-965/annex-VI/division-subpart+b/division-nccop131/division-b
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.