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 SEAT TRACK AT BS 344 TO 420 RBL 44. REMOVED CORROSION IAW B727 SRM 511006. REMOVED DAMAGED SECTION IAW B727 SRM 513002. FABRICATED NEW SEAT TRACK PER SAMPLE INSTALLED IAW B727 SRM 513002.