This new textbook by veteran author Dale Wilson provides the aviation community with a comprehensive, engaging, and current guide to the subject of aviation human factors. S ome accidents happen due to mechanical failure, improper maintenance, or hazardous weather—but the vast majority are caused by pilot action (or inaction). Pilots can commit errors and make decisions that lead to tragic outcomes. Most accidents are not intentional; inadvertent errors made by flight crews arise from normal human physiological, psychological, and pyschosocial limitations.