24.1. Commission Implementing Regulation (EU) 2023/893 of 21 April 2023 amending Regulation (EU) 2015/340 laying down technical requirements and administrative procedures relating to air traffic controllers’ licences and certificates - European Air Law (Update) View the chapter 24.1. Commission Implementing Regulation (EU) 2023/893 of 21 April 2023 amending Regulation (EU) 2015/340 laying down technical requirements and administrative procedures relating to air traffic controllers’ licences and certificates by - European Air Law (Update) 24.1. Commission Implementing Regulation (EU) 2023/893 of 21 April 2023 amending Regulation (EU) 2015/340 laying down technical requirements and administrative procedures relating to air traffic controllers’ licences and certificates