# 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 (e): The CVR shall record with reference to a timescale:

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

(1) voice communications transmitted from or received in the flight crew compartment by radio;
(2) flight crew members' voice communications using the interphone system and the public address system, if installed;
(3) the aural environment of the flight crew compartment, including without interruption:
(i) for aeroplanes first issued with an individual CofA on or after 1 April 1998 , the audio signals received from each boom and mask microphone in use;
(ii) for aeroplanes referred to in (a)(2) and first issued with an individual CofA before 1 April 1998 , the audio signals received from each boom and mask microphone, where practicable;
(4) voice or audio signals identifying navigation or approach aids introduced into a headset or speaker.

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Source: https://www.legislation.gov.uk/eur/2012/965/annex/IV/division/subpart+d/division/section+1/division/catidea185/division/e (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-965/annex-IV/division-subpart+d/division-section+1/division-catidea185/division-e
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.