teledorserious
IT IS CRAP. How many written exams did I pass in my aviation life? 10 or more...none of them including flight engineer and ATP said: will wiggling the rudder hard cause the plane to come apart?
NONE.
They all warned that a placcard had to be obeyed...and I've seen placcards like: do not use more than half control throw above 40,000' or something similar.
TELED...the FAA basically changed the rules after more than 30 years and not one other plane had the problems the b'us had/has.