The NTSB also determined that, unlike the United or USAir accidents, the rudder problem on Flight 517 occurred earlier in the landing process and at a higher speed, which increased airflow over the other control surfaces of the aircraft, allowing the pilots to overcome the rudder-induced roll.
A NTSB tamén determinou que, a diferencia dos accidentes do United e do USAir, o problema no timóns do voo 517 ocorreu antes no proceso de ateraxe e a unha velocidade maior, o que incrementou o fluxo de aire sobre as outras superficies de control do avión, permitindo aos pilotos superar o xiro inducido polo timón.