duty
as defined in Commission Implementing Regulation (EU) 2017/373 of 1 March 2017 laying down…
any task that an air traffic controller is required to perform by the air traffic control service provider
as defined in Commission Implementing Regulation (EU) 2017/373 of 1 March 2017 laying down…
any task that an air traffic controller is required to perform by the air traffic control service provider