As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN RH FLOOR SILL HAS CORROSION ON UPPER SURFACE AT FR 50 - REMOVED RH FLOOR SILL AT FR 50. STARTED LOCATING FASTENER HOLES IN NEW RH FLOOR SILL AT FR 50. STARTED INSTALLING MAIN CABIN RH FLOOR SILL AT FR 50. COMPLETED INSTALL OF MAIN CABIN RH FLOOR SILL AT FR 50.