# 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 7: General obligations of the CAA for data link communications

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

1. The CAA shall ensure that air-ground communications services applying the requirements of Part B of Annex IV are available to operators for aircraft flying within that airspace under its responsibility for data exchanges of the air-ground applications defined in the ICAO standards specified in points 2 and 3 of Annex III, with due regard to possible coverage limitations inherent in the communication technology used.
2. The CAA shall ensure that air navigation service providers and other entities providing communication services implement an appropriate security policy for data exchanges of the data link services defined in Annex II, notably by applying common security rules to protect distributed physical resources supporting those data exchanges.
3. The CAA shall ensure that harmonised procedures apply for the management of addressing information in order to unambiguously identify air and ground communications systems supporting data exchanges of the air-ground applications defined in the ICAO standards specified in points 2 and 3 of Annex III.

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Source: https://www.legislation.gov.uk/eur/2009/29/article/7 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-29/article-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.