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 CORROSION FOUND ON CENTER FUSE 3 AFT CARGO FLOOR SUPPORT AT FR 77 AND STR 29L-29L. REPLACED FLOOR SUPPORT PN 170-66350-002 IAW SRM 51-41-01, 51-41-02. SEE AAR NRC# 4500917-1000-0105 FOR DETAILS OF WORK PERFORMED. AC REMAINS IN YQG FOR COMPLETION.