Topic: In the early 1980’s, crew resource management (CRM) became the “buzz” word of the day. In the late 1990s, this idea was broadened to become known as human factors. The FAA addresses these issues in Advisory Circular AC 120-72. The FAA has identified the top twelve human factors which negatively affect maintenance in a pamphlet called “Avoid the Dirty Dozen .” After studying these twelve human factors, which three are of the greatest threat to an aviation maintenance technician? Why? While you may reference these two documents, the textbook and 1 other outside source must still be referenced.