As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C16 CHECK DISCOVERED LEVEL TWO CORROSION ON FLOORBEAM LOCATED AT BS 294.5, WL 207 AND BL 44R. RE-WORK WAS FOUND TO BE OUT OF LIMITS IAW BOEING 737-300 SRM 53-10-05-1A FIG 101. MAINTENANCE REMOVED DAMAGED SECTION OF FLOORBEAM IAW BOEING 737-300 SRM 53-10-51-2R. FABRICATED REPAIR ANGLES AND FLOORBEAM IAW BOEING 737-300 SRM 53-10-51-2R FIG 201. INSTALLED, FABRICATED REPAIR PARTS AT BS 294.5, WL 207 AND BL 44R.