As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 666 IN REF. NRC #00541: CORROSION ON FLOOR SUPPORT BTW STA 1660 TO STA 1680 AT L4 DOOR LOWER SILL. CORRECTIVE ACTION: SUMMARY OF NRC 00653: FLOOR SUPPORT BTW STA 1660 TO STA 1680 AT L4 DOOR LOWER SILL WAS REPLACED PER B757-200 SRM. (2246598)