As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CABIN FLOOR SUPPORT +Y765 SEVERAL FASTENER HOLES CORRODED BET FR 66 TO FR 68. REMOVED CORROSION IAW SRM 51-74-00 L=2.0 INCH W=2.0 INCH D=.075 INCH. ORIG MAT. 0.157. FOUND TO BE OUT OF LIMITS IAW TRM 53-41-15 FIG 1. REMOVED AND REPLACED FLOOR SUPPORT IAW SRM 51-42-11.