What was found
DURING HEAVY CHECK, RT WING FUEL LINE AND CLAMPS ARE CORRODED. MX R & R FUEL LINE AND THE CLAMPS, SWAPPED OVER FLOAT ACTUATED DRAIN VALVE IAW AMM 28-12-03. REPLACED ADJOINING TUBE SECTION DUE TO SURFACE DEGRADUATION IAW AMM 20-13-21, 20-10-13, 20-10-03.