What was found
SHIP 6823 ON REF NRC 0222 CORROSION ON INTERCOSTAL BTW STRINGER 29L TO 30 ON FLANGE AREA FROM STA= 1500 TO 1505 ALSO ON WEB AREA FROM STA= 1500 TO 1501 AT AFT CARGO COMPARTMENT. CORRECTIVE ACTION: SUMMARY OF NRC 00694. INTERCOSTAL BTW STRINGER 29L TO 30 ON FLANGE AREA FROM STA= 1500 TO 1505 ALSO ON WEB AREA FROM STA= 1500 TO 1501 AT AFT CARGO COMPARTMENT WAS REPAIRED PER. B757-200 SRM. (1998976)