As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C16 CHECK DISCOVERED CORROSION AROUND 4 FASTENER HOLES ON LOWER SURFACE OF THE RT MLG AFT SUPPORT BEAM. MAINTENANCE REMOVED CORROSION ON LOWER SURFACE OF THE RT MLG AFT SUPPORT BEAM IAW BOEING 737-300 SRM 51-10-02-0G. MATERIAL LOSS WAS BEYOND DESIGN LIMITS IAW BOEING 37-300 SRM 57-51-14-1A1 FIG 101 NOTE A. BEAM WAS REMOVED AND REPLACED ON NR 5844331.