# Commission Regulation (EU) 2018/395 of 13 March 2018 laying down detailed rules for the operation of balloons as well as for the flight crew licensing for balloons pursuant to Regulation (EU) 2018/1139 of the European Parliament and of the Council, Division BOP.ADD.600: System for determining the mass

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

(a)The operator shall establish a system specifying how all of the following items are accurately determined for each flight, so as to enable the pilot-in-command to verify that the limitations of the AFM are complied with:
(1)balloon empty mass;
(2)mass of the traffic load;
(3)mass of the fuel or ballast load;
(4)take-off mass;
(5)loading of the balloon performed under the supervision of the pilot-in-command or qualified personnel;
(6)preparation and disposition of all documentation.
(b)The mass computation based on electronic calculations shall be replicable by the pilot-in-command.
(c)The mass documentation, specifying the items listed in point (a), shall be prepared prior to each flight and documented in an operational flight plan.

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Source: https://www.legislation.gov.uk/eur/2018/395/annex/II/division/subpart+add/section/7/division/bop.add.600 (the official version)
Page: https://openlegislation.uk/eu-regulation-2018-395/annex-II/division-subpart+add/section-7/division-bop.add.600
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.