As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL SMELL IN CABIN, FUEL STAIN LEFT SIDE OF INTERNAL FUSELAGE AT AND BELOW ADAPTER. VISUALLY INSPECTED PART AND FOUND CRACK AT SUMP DRAIN VALVE FITTING. FUEL LEAKED INTO AND WAS STANDING IN THE HULL. LEAK DETECTED DURING REPAIR OF STRUCTURE IN THAT AREA.