Kostyshyn M. About. , Zharinov I. About. , Zharynov O. About. , Bogdanov A. In. Assessment of the frequency of updating information in the video stream of indication of onboard geoinformation data of avionics // Bulletin of Cherepovets State University, 2014, No4 (57), with. 9-15. The problem of assessing the frequency of updating information in the video stream of indication of geoinformation data in aviation instrument-making is considered. The functional schemes and the description of the principles of organization of information exchange on board the aircraft between the multifunctional color indicator and the on-board cartographic information system. are given. The results of experiments to assess the frequency of updating information when indicating a digital map of the area in modes: two-dimensional, two-dimensional (picture in the picture), three-dimensional.