As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C24 CHECK DISCOVERED LEVEL 2 CORROSION ON THE R1 INNER CHORD AT BS 294 TO BS 300 AND BS 333 AT BL 59R AND WL 208. MAINTENANCE REMOVED AND INSTALLED NEW R1 INNER CHORD FROM BS 294 TO BS 360, BL 59R AND WL 208 IAW BOEING 737-300 SRM 51-40-02-0G.