# 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 NCO.POL.105: Weighing

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

(a) The operator shall ensure that the mass and the CG of the aircraft have been established by actual weighing prior to the initial entry into service of the aircraft. The accumulated effects of modifications and repairs on the mass and balance shall be accounted for and properly documented. Such information shall be made available to the pilot-in-command. The aircraft shall be reweighed if the effect of modifications on the mass and balance is not accurately known.
(b)The weighing shall be accomplished by the manufacturer of the aircraft or by an approved maintenance organisation.

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Source: https://www.legislation.gov.uk/eur/2012/965/annex/VII/division/subpart+c/division/ncopol105 (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-965/annex-VII/division-subpart+c/division-ncopol105
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.