The out-of-the-loop performance problem, a major potential consequence of automation, leaves flight crews handicapped in their ability to take over manual operations in the event of automation failure. This is attributed to a possible loss of skills and of situation awareness (SA) arising from vigilance and complacency problems, a shift from active to passive information processing, and change in feedback provided to the operator. The authors examined the automation of a navigation task using an expert system and demonstrated that low SA corresponded with out-of-the-loop performance decrements in decision time following a failure of the expert system. Level of operator control in interacting with automation is a major factor in moderating this loss of SA. Results show that the shift from active to passive processing was most likely responsible for decreased SA under automated conditions.
Samenvatting