As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C18 CHECK DISCOVERED DISBOND AREA ON LOWER SURFACE OF THE RT OUTBOARD AFT FLAP AT THE INBOARD AFT CORNER. MAINTENANCE REMOVED DISBOND AREA FROM THE OUTBOARD AFT FLAP IAW BOEING 737-300 SRM 51-70-10-2R. FABRICATED AND BONDED REPAIR FILLER AND DOUBLER TO OUTBOARD END OF THE RT OUTBOARD AFT FLAP IAW BOEING 737-300 SRM 51-70-10-2R4 REPAIR 4 FIGURE 203.