How many main HFACS system inadequacies are there?

How many main HFACS system inadequacies are there?

• A. Four
• B. Five
• C. Six
• D. Seven

Answer: (B)

In HFACS, accident causation is viewed as arising from five broad system inadequacies that span everything from organizational decisions to individual actions and external pressures. These five are organizational influences, unsafe supervision, preconditions for unsafe acts, unsafe acts, and external factors. Organizational influences cover how management decisions, resource allocation, and safety culture shape risk. Unsafe supervision refers to inadequate oversight and supervision that fail to catch or mitigate risks. Preconditions for unsafe acts are the conditions that make mistakes more likely, such as high workload, fatigue, or poor coordination. Unsafe acts are the actual errors or violations by individuals. External factors include influences outside the immediate organization, like regulatory or industry pressures. Because these categories capture the full spectrum from high-level system issues to frontline actions and outside influences, the number commonly cited for HFACS system inadequacies is five.

In HFACS, accident causation is viewed as arising from five broad system inadequacies that span everything from organizational decisions to individual actions and external pressures. These five are organizational influences, unsafe supervision, preconditions for unsafe acts, unsafe acts, and external factors. Organizational influences cover how management decisions, resource allocation, and safety culture shape risk. Unsafe supervision refers to inadequate oversight and supervision that fail to catch or mitigate risks. Preconditions for unsafe acts are the conditions that make mistakes more likely, such as high workload, fatigue, or poor coordination. Unsafe acts are the actual errors or violations by individuals. External factors include influences outside the immediate organization, like regulatory or industry pressures. Because these categories capture the full spectrum from high-level system issues to frontline actions and outside influences, the number commonly cited for HFACS system inadequacies is five.