The Commission may, in particular adopt such regulations in respect of agreements, decisions or concerted practices which have as their object any of the following: ... -common purchase, development and operation of computer reservation systems relating to timetabling, reservations and ticketing by air transport undertakings, on condition that air carriers of Member States have access to such systems on equal terms, that participating carriers have their services listed on a non-discriminatory basis and also that any participant may withdraw from the system on giving reasonable notice ...
