The general field of the invention is that of synthetic vision system SVS type viewing systems, for aircraft, said system comprising at least one navigation database, a cartographic database of a terrain, position sensors, anemometric sensors, sensors for measuring the gradient of said terrain, an electronic computer, a man-machine interface means and a display screen, the computer comprising means of processing the various information obtained from the databases, from the sensors and from the interface means, said processing means arranged so as to provide on the display screen a synthetic image of the terrain comprising a representation of the final destination in the form of an air sock of aeronautical type.