As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 696 CORROSION ON CHANNELS (2EAS) UPPER/LOWER SURFACE ON LOWER SILL OF 4R DOOR BTW STA 1640-1681.8 AT PAX CABIN FLOOR STRUCTURE. CORRECTIVE ACTION: SUMMARY OF NRC 00427: CHANNELS (2EAS) ON LOWER SILL OF 4R DOOR BTW STA 1640-1681.8 AT PAX CABIN FLOOR STRUCTURE WERE REPLACED PER B757-200 SRM. (0160787)