As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AC WAS ION FOR HVY CK FOUND CENTER FUSELAGE 1 CABIN FLOOR STRUCTURE FR23 TO FR 34 LBL 11 SEAT TRACK CORRODED FROM FR 29 TO FR 34. MX REPLACED SEAT TRACK PN 170-67358-009 IAW SRM 51-41-02, 51-43-02, 51-43-01. SEE AAR NRC# 4500976-1000-0113. AC REMAINS IN YQG FOR COMPLETION