What was found
ON POST-FLIGHT, PILOT REPORTED FUEL LEAKING FROM RT WING FROM GEAR DOOR, FUEL TRACED TO BOX CELL AFT OF SPAR, OUTBOARD OF NACELLE. REPLACED FUEL CELL, POST-WORK OPS CHECKS OK. POSSIBLE CAUSE OF LEAKAGE WAS CONDITION/AGE OF FUEL CELL AND/OR IMPROPER INSTALLATION.