As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C4 CHECK LEVEL 2 EXFOLIATION CORROSION WAS FOUND ON RIGHT HAND OUTBOARD SEAT TRACK FROM FS 20 TO FS 24. ORIGINAL DAMAGE WAS OUT OF LIMITS. MAINTENANCE REMOVED THE DAMAGED SEAT TRACK, FABRICATED 4 REPAIR ANGLES. INSTALLED NEW SEAT TRACK EXTRUSION AND 4 REPAIR ANGLES IAW AIRBUS A320 SRM 53-11-15 FIG 203.