Description / Abstract: This document provides the minimum operational, Safety, and Performance Requirements (SPR) and Interoperability Requirements (INTEROP) for the implementation of Airborne Traffic Situational Awareness (ATSA) for “Enhanced Visual Separation on Approach” (VSA). The ATSA-VSA application is fully defined. The document defines and allocates the set of minimum requirements for the end-to-end operational, safety, performance, and interoperability aspects for implementations of the ATSA-VSA application. The requirements contained in this document are necessary to provide adequate assurance that the appropriate aspects of the relevant Communication Navigation 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 OSED. The system here includes ground and airborne elements. The document was developed jointly by RTCA Special Committee 186 and EUROCAE Working Group 51 - within the group commonly referred to as the “ADS-B Requirements Focus Group” (RFG).