It's in the comment, bottom of page in the link:
"CC-AHC es la matricula y el problema se debió a que se activo en vuelo el reverso del motor N°2 una falla muy extraña en este tipo de avión, de hecho suscito la atención de AIRBUS por lo cual tecnicos de ellos iran a Lima a periciar que pudo haber pasado, ya que el avion quedo AOG en Lima."
meaning:
"Registration is CC-AHC and the problem was caused by in-flight deployment of engine n°2 reverser, a very infrequent failure on this airplane type. This drew attention of Airbus who thus sent technicians in Lima to find out what might have happened, as the aircraft is grounded in Lima"