What was found
AFT CARGO COMPARTMENT RH SIDE AT BETWEEN FR64 AND FR65 STR 31 HAD CORROSION. AFTER EVALUATION OF CORROSION NO ALLOWABLE DAMAGE ON BLEND IAW S INGER IAW SRM 51-42-11, AND INSTALLED OUTFLOW VALVE IAW AMM 21-3 RM 53-41-13-283-002, REMOVED OUT FLOW VALVE IAW AMM 21-31-51, R 1-51-400-006-A. REMOVED STRINGER 31R FROM FR64 TO 67 IAW SRM 51-41-11, RECEIVED, LOCATED AND DRILLED IAW SRM 51-44-11, INSTALLED THE NEW STRINGER.