The Safety Analysis and Risk Mitigation Process  Section 3  The required depth and breadth of the safety analysis and the amount of collaboration across  organizations can vary based the following factors:  In general, safety analyses for more complex and far-reaching NAS changes will require a  greater scope and more detail. When evaluating a NAS change, consider any potential effect  on organizations outside the Air Traffic Organization (ATO) (e.g., the Office of Aviation Safety  and the Office of Airports). When an ATO safety analysis impacts Federal Aviation Administration (FAA) LOBs and/or  organizations outside the ATO, the provisions and guidance in the current version of  FAA Order  8040.4,  Safety Risk Management Policy , apply. Refer to Section 3.4.5 for information on  coordinating and addressing  existing  safety issues. Refer to Section 6.4.1 and Section 6.4.2  for discussion on cross-LOB risk acceptance. Guidelines to help determine the scope of the SRM effort include:  When setting the scope of a safety analysis:  • Set the scope wide enough to determine the aggregated risk and assess any gaps. • Collect safety documentation that has assessed the building blocks of the NAS change. • Identify temporal aspects of these relationships/interactions. • Define the relationships/interactions of the NAS change. • Limiting the system to those elements that affect or interact with each other to accomplish the mission or function. • Determining the system elements that interact or sub-system components that may be affected; and • Having a sufficient understanding of system boundaries, including interfaces with peer systems, larger systems of which the system is a component, and users and maintainers; • The breadth of the NAS change. The scope of an SRM activity will require additional details when the NAS change affects more than one organization or Line of Business (LOB). • The complexity of the NAS change. The complexity and nature (i.e., operational or system acquisition) of the NAS change will dictate the type, depth, and number of analyses required. 3.3.2.2  Required Depth and Breadth of the Analysis 3.3.2.3 Involving Other FAA LOBs  3.3.2.4  Setting the Scope of the Analysis  27 3.3_SMSM_201509 Originally published September 2015 Uncontrolled copy when downloaded