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 CORROSION ON THE AFT PRESSURE BULKHEAD, LOWER FORWARD FACE SKIN, RT OUTBOARD SIDE OF THE CENTER CHANNEL AT BS 1016, WL 201 AND BL 2R. MAINTENANCE CUT OUT DAMAGED SECTION OF BULKHEAD IAW BOEING DWG 65C28106. RECEIVED AND INSTALLED NEW AFT PRESSURE BULKHEAD SKIN IAW BOEING 737-300 SRM 51-40-02-0G AND DWG 65C28106. LEAK CHECK WAS GOOD IAW BOEING 737-300 AMM 21-00-05-2.