What was found
SURFACE CORROSION ON LH SIDE CENTER WING TANK LOWER SKIN BETWEEN STRINGERS S5C AND S6C AT LBL40.875+5.5" & S5C AT LBL 40.875+1.0";LBL40.875+3.5",LBL40.875+5.5" & BETWEEN STRINGERS S4C AND S5C AT LBL40.875+2.0". CORROSION REMOVED AND CONDITION CHECK OK WITHIN LIMIT ON LH SIDE CENTER WING TANK LOWER SKIN BETWEEN STRINGERS S5C AND S6C AT LBL 40.875+5.5" & S5C AND LBL 40.875+10"; LBL 40.875+3.5", LBL 40.875+5.5" & BETWEEN STRINGERS S4C AND S5C AT LBL 40.875+2.0" PER REF CA1579/28 WPS CODE:EI-737-241001. LH SIDE CENTER WING TANK LEAK CHECK NO LEAKING.