The present invention relates to a system (14) for displaying avionic data on at least one display space of an aircraft cockpit, comprising a processing module (23) configured to receive a message to be displayed indicating an event and to associate the content of this message with one of the display formats, a display module (25) configured to display the received message superimposed on at least one current display format, displayed in a respective display space and an acquisition module (27) configured to acquire a display control command relative to the received message. The display module (25) is further configured to display the display format associated with said message on at least one display space in case of acquisition of the display control command relative to said message.