On his website, dviaviation.com, aviation and airports expert witness Steven J. Meyers, discusses pilot error. Mr. Meyers is an experienced aircraft accident investigator, and has work experience as an engineer, pilot, and mechanic.
Human beings are unpredictable as compared to physical evidence, and in the absence of cockpit or flight recorded data, investigators are left with evaluating human behavior from a percentage of likelihood. Most investigators typically lack adequate training to properly evaluate human behavior and performance, because there are such a large and diverse number of reasons that pilots can commit an error. Pilots make errors because they have not been adequately trained to perform tasks, or because they do not have the basic ability to perform the task even if they were trained. They commit errors because the task is beyond normal human abilities. They commit errors because they misinterpret information important to the performance of the task. They commit errors because some event occurring during the performance of the task changes the nature of the task in a way that they have never encountered. They also commit errors because of influences such as stress, distraction, fatigue, illness, visual illusions, spatial disorientation, old age, immaturity, and cultural beliefs. Pilot performance is also influenced or affected by such issues as cockpit design, temperature, altitude, physiology of the body, emotions, interactions, and communications.
Some common Human Factors issues related to piloting error can include: