# 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 (d): The operator shall establish procedures to enable the pilot-in-command to determine the mass of the traffic load, including any ballast, by:

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

(1) actual weighing;
(2) determining the mass of the traffic load in accordance with standard passenger and baggage masses; or
(3) calculating passenger mass on the basis of a statement by, or on behalf of, each passenger and adding to it a predetermined mass to account for hand baggage and clothing, when the number of passenger seats available on the aircraft is:
(i) less than 10 for aeroplanes; or
(ii) less than six for helicopters.

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Source: https://www.legislation.gov.uk/eur/2012/965/annex/VI/division/subpart+c/division/nccpol105/division/d (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-965/annex-VI/division-subpart+c/division-nccpol105/division-d
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.