What was found
C-CHECK: NON ROUTINE N0557; MAIN CABIN FLOORBEAM, NR 4 LT BETWEEN FRAME 67-68 HAS APPROX 2 SQ IN OF CORROSION AT THE FASTENER HOLES. R & R FLOORBEAM IAW SRM 51-44-11, SRM 51-42-11.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
C-CHECK: NON ROUTINE N0557; MAIN CABIN FLOORBEAM, NR 4 LT BETWEEN FRAME 67-68 HAS APPROX 2 SQ IN OF CORROSION AT THE FASTENER HOLES. R & R FLOORBEAM IAW SRM 51-44-11, SRM 51-42-11.