As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-21 CHECK, CORROSION FOUND AT R1 DOOR CUTOUT ON FORWARD UPPER CORNER AT BS 300. CORROSION WAS FOUND TO BE OUT OF LIMITS AT R1 DOOR CUTOUT ON FORWARD UPPER CORNER AT BS 300 IAW BOEING 737-300 SRM 53-10-15 FIG 101. MAINTENANCE REMOVED AND INSTALLED NEW REVEAL AT R1 DOOR CUTOUT ON FORWARD UPPER CORNER AT BS 300 IAW BOEING 7373-300 51-40-02, FIGURE 4 AND FIGURE 8.