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 CKCORROSION FOUND ON CENTER FUSELAGE 3 AFT CARGO FLOOR SUPPORT SHEAR CLIP AT FR 81 AND STR 29R-29L. REPLACED SUPPORT PN 170-66354-002 IAW SRM 51-41-01. SEE AAR NRC# 4500917-1000-0102 FOR DETAILS OF WORK PERFORMED. AC REMAINS IN YQG FOR COMPLETION.