# 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 (a): When determining the maximum take-off mass, the pilot-in-command shall take the following into account:

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

(1) the calculated take-off distance shall not exceed the take-off distance available with a clearway distance not exceeding half of the take-off run available;
(2) the calculated take-off run shall not exceed the take-off run available;
(3) a single value of V 1 shall be used for the rejected and continued take-off, where a V 1 is specified in the AFM; and
(4) on a wet or contaminated runway, the take-off mass shall not exceed that permitted for a take-off on a dry runway under the same conditions.

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Source: https://www.legislation.gov.uk/eur/2012/965/annex/VI/division/subpart+c/division/nccpol125/division/a (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-965/annex-VI/division-subpart+c/division-nccpol125/division-a
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.