What was found
FUEL LEAKING FROM RIGHT WING ROOT, FUEL STAIN ON FUSELAGE. DRAINED FUEL, OPENED ACCESS PANELS OF FUEL TANK, FOUND SEALANT USED AROUND FUEL CELL (WET WING) INTERIOR AT THE OUTLET HAD A VOID AREA UNDER THE OUTLET TUBE ASSEMBLY. APPARENT LACK OF ATTENTION TO DETAIL WHEN APPLYING THE SEALANT TO THIS AREA WAS THE PROBABLE CAUSE. TANK WAS RE-SEALED IN THIS AREA AND TANK WAS RE-FUELED WITH NO LEAKS NOTED.