As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C19 CHECK DISCOVERED LOWER SKIN CHAFED AT O/B END OF THE RT O/B FORE FLAP, RT WING. MAINTENANCE REPAIRED LOWER SKIN AREA BY REMOVING CHAFED REPAIR DOUBLER AND FILLER IAW BOEING 737-300 SRM 51-70-10-2R4. FABRICATED REPLACEMENT DOUBLER AND FILLER IAW BOEING 737-300 SRM 57-53-02-0I2 FIG 1 SHEET 5. BONDED FABRICATED REPAIR PARTS TO THE O/B END OF THE RT O/B FORE FLAP, RT WING IAW BOEING 737-300 SRM 51-70-10-2R4 FIG 202.