# Commission Regulation (EC) No 29/2009 of 16 January 2009 laying down requirements on data link services for the single European sky (Text with EEA relevance), Article 4: Associated procedures

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

ATS providers providing air traffic services and operators using air traffic services supported by the data link services defined in Annex II shall apply common standardised procedures consistent with relevant provisions of the International Civil Aviation Organisation (hereinafter ICAO) for:
1.. the establishment of controller — pilot data link communications (hereinafter CPDLC);
2.. the exchange of operational CPDLC messages;
3.. the transfer of CPDLC;
4.. the temporary discontinuation of the use of CPDLC pilot requests;
5.. failure and shutdown of CPDLC;
6.. the filing of flight plans regarding information pertaining to data link capability.

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Source: https://www.legislation.gov.uk/eur/2009/29/article/4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-29/article-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.