In response to the turbulence, the first officer alternated between moving the rudder from the left to the right and back again in quick succession for at least 20 seconds, until 9:15:56, when the stress caused the lugs that attached the vertical stabilizer and rudder to fail.
En resposta á turbulencia, o primeiro oficial comezou a mover o timón de esquerda a dereita en sucesións rápidas durante polo menos 20 segundos, ata as 9:15:56, cando o estrés causou que as lengüetas que mantiñan unido o estabilizador vertical e o timón fallaron.