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-18 CHECK A HOLE WAS FOUND CHAFED THROUGH FRAME AT BS 500A BETWEEN STR 1 LT AND STR 1 RT. MAINTENANCE REMOVED DAMAGED SECTION OF FRAME AT BS 500A BETWEEN STR 1 LT AND STR 1 RT; FABRICATED 2 EACH REPAIR CHANNELS AND A FILLER; INSTALLED REPAIR PARTS IAW B737-300 SRM 53-00-07, FIG 201 PG 202.