Controllability of events and associated factors: Lessons learned from aviation

BACKGROUND • Safety performance: • Safety performance in the industry is measured based on the severity of events (incidents, serious incidents and accidents)through respective indicators (e.g., number of accidents / unit of exposure). • Aviation safety performance has been continuously increased over the last half-century. • Authorities and organizations try to improve safety levels through: • Proactive methods (i.e. before an unwanted event occurs), such as audits, analysis of hazard reports etc. • Reactive methods (i.e. after an unwanted event happens) activities, mainly safety investigations.