As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AC WAS IN FOR HVY CK FOUND CENTER FUSELAGE 1 CABIN FLOOR STRUCTURE FR 23 TO FR 34 RBL11 SEAT TRACK CORRODED FROM FR 29- FR 34. MX REPLACED SEAT TRACK PN 170-67861-007 IAW SRM 51-43-01, 51-43-01. SEE AAR NRC#4500976-2000-0152 FOR WORK PERFORMED. AC REMAINS IN YQG FOR COMPLETION.