As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C19 CHECK DISCOVERED SKIN CRACK AT FASTENER HOLE AT BS 628 AND STR 4R. MAINTENANCE CUT OUT DAMAGED AREA OF SKIN IAW BOEING 737-300 SRM 53-00-01-2R30. FABRICATED FILLERS AND DOUBLERS IAW BOEING 737-300 SRM 53-00-01-2R30. INSTALLED FABRICATED REPAIR PARTS AT BS 628 AND STR 4R IAW BOEING 737-300 SRM 53-00-01-2R30.