Article 5 4.

The Commission is empowered to adopt delegated acts in accordance with Article 43 to supplement this Regulation by laying down the necessary detailed rules on the common protocols and supported data formats to be used for the encrypted transfers of API data to the router referred to in paragraph 1 of this Article, including the transfer of API data at the moment of check-in and requirements for data security. Such detailed rules shall ensure that air carriers transfer API data using the same structure and content.