PREVENT OVERREACTION
A Safety Management System (SMS) is designed to identify hazards, assess risks, implement effective controls, monitor performance, and continuously improve safety throughout an organization. Achieving these objectives requires more than collecting reports and conducting audits. It requires understanding how the entire system behaves over time. Statistical Process Control (SPC) provides this capability by transforming operational and safety data into meaningful information that supports evidence-based decision-making. Rather than relying on assumptions, isolated events, or subjective opinions, SPC enables organizations to distinguish between normal process variation and genuine signs of deteriorating safety performance. As a result, management can focus resources where they will have the greatest impact while maintaining confidence that safety decisions are supported by objective evidence. Every operational process contains common cause variations. In aviation and other safety-critical ...