HFACS framework embodies four levels of human failure (unsafe acts, preconditions for unsafe acts, unsafe supervision and organizational influences) that lead to an accident (Harris, 2011). Errors correspond to human activities that fall short of producing intended outcomes (Wiegmann and Shappell, 2012). In this accident, the captain made a skill-based error by failing to prioritize his attention; he told the investigators that the use of the auto brake system diverted his concentration from thrust reversers. Violation refers to willful discount for safety rules and regulations (O'Connor & Cohn, 2010). Violation committed in this case if the failure by the pilots to adequately familiarize themselves with the auto brake system; they were using it for the first time. They both resulted in a delayed response.
Preconditions for unsafe acts refer to the incident resulting in unsafe acts (Wiegmann and Shappell, 2012). In this case, the pilots lacked effective communication/coordination. This can be seen when the first officer took away the captain’s hand from the thrust reverser levers rather than directing him to engage thrust reversers. Under unsafe supervision, the pilots were not allowed sufficient brief time as they departed without the latest updated weather information and dispatch documents and only evaluated and analyzed the procedures for auto brake system while en route.
Southwest airlines failed to provide precise landing calculations to her pilots; all of the landing calculations