As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: REF STS WO003745 N0769 R4 DOOR SILL STRUCTURE FRAME 66 HOES FASTENERS NEXT TO GIRT BAR FITTING WITH SEVERAL CORROSION SPOTS; REF STS WO# W003745 N0769 REMOVED AND REPLACED DOOR SILL AT R4, FR66 TO FR68 IAW A321- SRM 51-42-11.