The Safety Risk Management Guidance for System Acquisitions (SRMGSA) applies to acquisitions that have a potential effect on safety risk in the National Airspace System (NAS) when the acquired systems are operationally fielded. The SRMGSA includes information pertaining to Federal Aviation Administration (FAA) Acquisition Management System changes, Next Generation Air Transportation System Portfolio Management, and Integrated Safety Management. The body of the document contains only high-level policy and guidance concerning Safety Risk Management (SRM) in acquisitions.