As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C3 CHECK DISCOVERED CORROSION ON THE LT OUTBOARD SEAT TRACK AT FS 41 TO FS 44. CORROSION WAS FOUND TO BE OUT OF LIMITS IAW AIRBUS 320 SRM 53-31-15 FIG 103. MAINTENANCE REMOVED AND INSTALLED NEW SEAT TRACK FROM FS 41 TO FS 47 IAW AIRBUS 320 SRM 51-72-11 AND AIRBUS 320 AMM 20-21-11 FIG 203.