ISO Standards PD ISO/TR 23629-1:2020 pdf download PD ISO/TR 23629-1:2020,UAS traffic management (UTM) — Part 1: Survey results on UTM. PD ISO/TR 23629-1:2020 provides results of a survey on UTM which indicates aggregated data from survey respondents. This survey is composed of part 1... 06-14 Read More