As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*WHILE AIRCRAFT WAS IN HEAVY CHECK* MAINTENANCE FOUND LEVEL 2 CORROSION ON CENTER FUSELAGE III DRY AREA 53-23 LH SEAT TRACK FRAME 84. MAINTENANCE PERFORMED PERMANENT REPAIR BY FABRICATION AT LH SEAT TRACK FRAME 84 FILLER AND SPLICES REPAIR, REF: SRM 53-00-10/REPAIR01. THIS AIRCRAFT REMAIN IN HEAVY CHECK FOR DURATION OF THE CHECK.