# Commission Implementing Regulation (EU) No 923/2012 of 26 September 2012 laying down the common rules of the air and operational provisions regarding services and procedures in air navigation and amending Implementing Regulation (EU) No 1035/2011 and Regulations (EC) No 1265/2007, (EC) No 1794/2006, (EC) No 730/2006, (EC) No 1033/2006 and (EU) No 255/2010 (Text with EEA relevance), Division (d): VFR flights shall not be operated:

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

(1) at transonic and supersonic speeds unless authorised by the competent authority;
(2) above FL 195. Exceptions to this requirement are the following:
(i) an airspace reservation has been established, where practical, by the competent authority, in which VFR flights may be allowed; or
(ii) airspace up to and including flight level 285, when VFR traffic in that airspace has been authorised by the responsible ATS unit in accordance with the authorisation procedures established by the competent authority and published in the relevant aeronautical information publication.

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Source: https://www.legislation.gov.uk/eur/2012/923/annex/section/5/division/SERA.5005/division/d (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-923/annex/section-5/division-SERA.5005/division-d
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.