As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE WAS RETURNED FOR HOT SECTION MX. DURING THIS MX ACTION, IT WAS DISCOVERED THAT THE INTERSTAGE HOUSING DAMPENERS WERE NOT INSTALLED CORRECTLY. THE DAMPENERS WERE INSTALLED ON TOP OF THE SPACERS BETWEEN THE SPACER AND NUT, RATHER THAN THE BOTTOM OF THE SPACER BETWEEN THE SPACER AND NR 2 HOUSING. THE INTERSTAGE HOUSING WAS FLUORESCENT PENETRANT INSPECTED WITH NO DEFECT NOTED.