As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-21 CHECK DISCOVERED 2 CRACKS .113 INCHES IN LENGTH ON ANGLE LOCATED AT BULKHEAD STA 178 LBL 5.7 WL 184. MAINTENANCE CUT OUT AND REMOVED DAMAGED AREA FROM BULKHEAD LOCATED AT STA 178. FABRICATED REPAIR ANGLES, STRAPS, FILLERS IAW BOEING 737-300 SRM 53-10-08-2 FIG 205 AND INSTALLED REPAIR PARTS AT BULKHEAD STA 178 IAW BOEING 737-300 SRM 53-10-08-2 FIG 205.