As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE INSPECTION CORROSION WAS FOUND OUT OF LIMITS ON THE SEAT TRACK AT STA 344 TO 480 RBL 42. REMOVED CORROSION IAW B727 SRM 511006. REMOVED DAMAGED AREA IAW B727 SRM 513002. FABRICATED NEW SEAT TRACK PER SAMPLE. INSTALLED IAW B727 SRM 513002.