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 LT BS 178 BULKHEAD WEB CRACKED AROUND 3 FASTENERS, 1 INCH, AT WL 234 FROM BL 6.5L TO BL 17L. MAINTENANCE CUT OUT DAMAGED AREA OF WEB IAW BOEING 737-300 SRM 53-10-08-2R9. PERFORMED HFEC INSPECTION, NO CRACKS FOUND. FABRICATED DOUBLER AND FILLER IAW BOEING 737-300 SRM 53-10-08-2R9. INSTALLED FABRICATED REPAIR PARTS AT BS 178 BULKHEAD FROM BL 6.5L TO BL 17L AT WL 234 IAW BOEING 737-300 SRM 53-10-08-2R9.