As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AIRCRAFT 5642, L/P 1252476) INITIAL INSPECTION: CORROSION ON FLOOR SUPPORT CHANNEL LBL 56 AND BTW STA 1660 TO 1680 AT PASSENGER CABIN (CPAX). SUMMARY OF NRC 369: (LEVEL CORROSION 2) FLOOR SUPPORT CHANNEL LBL 56 BTW STA 1660 TO 1680 WAS REPLACED PER SRM 51-40- / 02 PAR 7 AND SRM 51-40-05.