As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO DOOR CUTOUT - THRESHOLD SKIN @ DOOR SILL FROM FRAME 787-847 -EARLY SIGNS OF CORROSION.ALSO TO HAVE SCRIBE LINES, SCRATCHES AND BARE METAL AREAS ALONG ITS LENGTH.RED MARKED. GROUNDED - YES. REMOVED AND REPLACED AFT CARGO DOOR CUTOUT THRESHOLD SKIN FROM FRAME 787 TO 847 IAW B737-800 SRM 51-40-05 AND SRM 51-40-02.