As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION TWO EACH AREAS ON TOP SURFACE OF MAIN FRAME, AFT CGO COMPARTMENT FLOOR STRUCTURE BS 1219 LBL 10 & LBL 47. CORROSION WAS FOUND TO BE 100% MATERIAL LOSS & OUT OF LIMITS IAW SRM 53-00 -07 FIG 101. R & R CHORD IAW SRM 51-40-0 2 PARA 4 FIG 3, 4 & 8.