As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 688 CORROSION ON INTERCOSTAL LOWER FLANGE (MATING SURFACE SKIN) FROM STA 1400 TO 1420 BTW LBL 15 AT AFT CARGO COMPARTMENT. CORRECTIVE ACTION: SUMMARY NRC 00235: INTERCOSTAL LOWER FLANGE (MATING SURFACE SKIN) FROM STA 1400 TO 1420 BTW LBL 15 AT AFT CARGO COMPARTMENT WAS REPAIRED PER B757-200 SRM. (2775332)