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 CRACK UNDER LT ANTENNA ATTACH BRACKET AT BS 178, WL 212 AND BL 5L. MAINTENANCE CUT OUT DAMAGED PART OF WEB IAW BOEING 737-300 SRM 53-10-08-2R11. FABBED DOUBLER AND SHIM IAW BOEING 737-300 SRM 53-10-08-2R11. INSTALLED FABRICATED REPAIR PARTS AT BS 178, WL 212 AND BL 5L IAW BOEING 737-300 SRM 53-10-08-2R11.