What was found
AC WAS REQUESTED TO RESPOND TO THE AIRPORT FOR A SCENE RENDEZVOUS WITH THE AMBULANCE. AFTER DEPARTURE FROM HOSPITAL, THE MEDICAL CREW NOTICED A FUEL ODOR. THE FLIGHT WAS ABORTED AND AC LANDED AT MEDICAL CENTER WITH ALL AIRCRAFT INDICATIONS NORMAL. ON FINAL APPROACH AND LANDING, THE FUEL ODOR BECAME STRONGER AND AFTER LANDING, A LARGE QUANTITY OF FUEL WAS NOTED COMING FROM THE AC DRAINS AS WELL AS FUEL SPATTER ON THE SIDE CABIN WINDOWS. PARAMEDIC CREWMEMBER STOOD FIREGUARD AS AC WAS SHUTDOWN. AFTER SHUTDOWN THE ENGINE COWLING WAS OPENED AND LARGE QUANTITY OF FUEL WAS FOUND POOLING ON THE ENGINE DECK. MAINT HAD COMPLETELY REPLACED THE SEAL ON THE HMU EARLIER IN THE DAY AND MAINT RUNS HAD BEEN COMPLETED PRIOR TO THE AIRCRAFT BEING RETURNED TO SERVICE. THE SAME SEAL WAS AGAIN LEAKING. SEAL WAS REPLACED AGAIN.