Abstract: The invention concerns the device, on board an aircraft, of data received or exchanged without any audio communication with the ground or with other aircraft by means of a data management device provided with display means showing, in a dedicated area of an interactive multi-purpose screen, shared with the flight primary instruments and the flight management computer, a set of different windows, one (LOGON) assigned to the management of an air-ground link designed to run messages with the ground, and each of the others (CPDLC, ADS, FIS, AOC, APC) being assigned to different specialized services and a selection system (a) with constantly visible tabs in the foreground, enabling any one of the management windows to be selected and focused by means of a pointing and inputting device.