What was found
DURING THE PILOT POST FLIGHT INSPECTION, A STRONG ODOR OF JET FUEL WAS PRESENT AFTER OPENING THE LEFT COWL. THE TOP OF THE AIR CONDITIONER CONDENSER HOUSING, LOCATED AT THE BOTTOM OF THE LEFT COWL, WAS WET ON THE TOP WITH FUEL. A LEAK WAS DISCOVERED DRIPPING FUEL FROM A UNION ASSOCIATED WITH THE FUEL ECOLOGY TANK UNIQUE TO THE CARAVAN EX MODELS. THE MECHANIC SEPARATED THE UNION, INSPECTED THE FLARE AND RETORQUED THE FITTINGS. DURING A LEAK CHECK WITH THE FUEL BOOST PUMP OPERATING, SMALL BUBBLES AND FUEL DRIPS RESUMED FROM THE SAME LOCATION. THE TUBE WAS REMOVED FROM THE AIRFRAME AND THE MECHANIC DISCOVERED 2 SMALL LONGITUDINAL CRACKS ABOVE THE FLARE UNDERNEATH THE AREA OF THE MS20819-4 SLEEVE. IT WAS DETERMINED THAT THE FUEL WAS LEAKING THROUGH THE SIDEWALL OF THE TUBE AND OUT THE BACK OF THE B-NUT. THE TUBE, SLEEVE, AND AN FITTING WERE ALL STAINLESS STEEL AND APPROPRIATELY INSTALLED WITH NO EXTERNAL DAMAGE.