As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C4 CHECK IT WAS DISCOVERED THAT THE RIGHT INBOARD SEAT TRACK AT FS 20-24 HAD LEVEL 2 EXFOLIATION CORROSION 19" IN LENGTH, 3" WIDE AND 0.015" DEEP. ORIGINAL DAMAGE WAS OUT OF LIMITS PER A320 SRM 53-00-15 FIG 10. MAINTENANCE FABBED 4 NEW REPAIR ANGLES. REMOVED DAMAGED SECTION OF SEAT TRACK AND INSTALLED NEW SEAT TRACK EXTRUSION AND 4 REPAIR ANGLES TO RIGHT SEAT TRACK AT FS 20-24 IAW AIRBUS A320 SRM 53-11-15 FIG 203.