Accident models have over the last 70 years slowly developed from linear cause-effect sequences to systemic descriptions of emergent phenomena. An example of the latter is the Functional Resonance Accident Model (FRAM), which uses the principle of stochastic resonance in a system context. The model can be used both to account for complex accidents and to identify risks in dynamic systems. The latter is demonstrated by means of the area navigation (RNAV) approach operation.