What was found
AT AND AROUND LT DUMP VALVE, FOUND WIDESPREAD LEVEL 2 CORROSION AFFECTING SKIN, STRINGER, SHEAR TIE, FRAME, RIB, DOUBLER, LOCATED AT ZONE 100, STA 2180-2200, STR44L, WL130, LBL40. REPAIR IAW BOEING DOC CKF-AMD-121, CKF-AMD-152. FOUND DURING ACCOMPLISHMENT OF C, D CHECK, CPCP WORK CARD ACCOMPLISHMENT. WORK ORDER NUMBER MO280, CORROSION TASK CARD NUMBER C53-125-01-02.