# 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 (c): Whenever two pilots are required for the operation, aeroplanes shall be equipped with an additional separate means of displaying the following:

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

(1)barometric altitude;
(2) indicated airspeed;
(3) slip, or turn and slip, as applicable;
(4) attitude, if applicable;
(5) vertical speed, if applicable;
(6) stabilised heading, if applicable; and
(7) Mach number whenever speed limitations are expressed in terms of Mach number, if applicable.

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Source: https://www.legislation.gov.uk/eur/2012/965/annex/VI/division/subpart+d/division/section+1/division/nccidea120/division/c (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-965/annex-VI/division-subpart+d/division-section+1/division-nccidea120/division-c
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.