Description / Abstract: This document defines and allocates a set of minimum requirements for the end-to-end operational, safety, performance and interoperability aspects for the implementations of the ADS-B-RAD application. The requirements are necessary to provide adequate assurance that the elements of the relevant Communication, Navigation, and Surveillance and Air Traffic Management (CNS/ATM) system, when operating together, will perform their intended function in an acceptably safe manner for the operations defined in the Operational Services and Environment Definition (OSED). This system includes ground and airborne elements. In addition, the document defines ADS-B requirements applicable to dense airspaces such as those found in Europe and the USA.