# Commission Implementing Regulation (EU) 2018/1048 of 18 July 2018 laying down airspace usage requirements and operating procedures concerning performance-based navigation, Article 4: Transitional measures

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

1. Providers of ATM/ANS shall take the necessary measures to ensure a smooth and safe transition to the provision of their services using performance-based navigation in accordance with Article 3.
Those measures shall include the establishment and implementation of a transition plan. Providers of ATM/ANS shall keep their transition plan up-to-date.
The transition plan shall be consistent with any regulations made by the Secretary of State under Article 15a of Regulation 550/2004 of the European Parliament and of the Council.
2. Providers of ATM/ANS shall consult all of the following parties on the draft transition plan and the draft of any significant updates thereof and take account of their views where appropriate:
(a) aerodrome operators, airspace users and representative organisations of such airspace users affected by the provision of their services;
(b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(c) providers of ATM/ANS that provide their services in adjacent airspace blocks.
3. After having carried out the consultation referred to in paragraph 2, providers of ATM/ANS shall submit the results of the consultation, as well as the draft transition plan, or the draft significant update thereof, for approval to the Civil Aviation Authority.
The Civil Aviation Authority shall verify whether the draft transition plan, or the draft significant update thereof, complies with the requirements of this Regulation and in particular whether it takes account of the views of airspace users where appropriate, including those operating State aircraft. ...
The Civil Aviation Authority shall inform the providers of ATM/ANS of the outcome of that verification without undue delay. Providers of ATM/ANS shall not establish or implement the transition plan, or the significant update thereof, before having been informed by the Civil Aviation Authority that it has approved the draft transition plan or draft significant update thereof.

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Source: https://www.legislation.gov.uk/eur/2018/1048/article/4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2018-1048/article-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.