# Regulation (EU) 2018/1139 of the European Parliament and of the Council of 4 July 2018 on common rules in the field of civil aviation and establishing a European Union Aviation Safety Agency, and amending Regulations (EC) No 2111/2005, (EC) No 1008/2008, (EU) No 996/2010, (EU) No 376/2014 and Directives 2014/30/EU and 2014/53/EU of the European Parliament and of the Council, and repealing Regulations (EC) No 552/2004 and (EC) No 216/2008 of the European Parliament and of the Council and Council Regulation (EEC) No 3922/91 (Text with EEA relevance), Division 1.6: Language Proficiency

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

A pilot must have language proficiency to a degree appropriate to the functions exercised on the aircraft. Such proficiency shall include:
(a) the ability to understand weather information documents;
(b) the use of aeronautical en-route, departure and approach charts and associated aeronautical information documents; and
(c) the ability to communicate with other flight crew and air navigation services during all phases of flight, including flight preparation, in the language used for radio communications involved in the flight.

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Source: https://www.legislation.gov.uk/eur/2018/1139/annex/IV/division/1/division/1.6 (the official version)
Page: https://openlegislation.uk/eu-regulation-2018-1139/annex-IV/division-1/division-1.6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.