What was found
APPROXIMATELY 5 MINUTES FOLLOWING DEPARTURE FROM BASE, THE MEDICAL CREW IN THE CABIN REPORTED SMELLING WHAT WAS BELIEVED TO BE A FUEL ODOR COMING FROM THE REAR OF THE AIRCRAFT. THE PILOT IMMEDIATELY ABORTED THE FLIGHT, AND RETURNED TO BASE WITHOUT INCIDENT. AFTER AIRCRAFT LANDED, IN GROUND IDLE ON NR 1 ENGINE AND NR 2 ENGINE FOUND NO LEAKS OR FUEL FUME ODORS. INSPECTED ALL VISIBLE FUEL LINES AND DRAINS FOR EVIDENCE OF FUEL WITH NONE DETECTED. INSPECTED BOTTOM OF AIRCRAFT FOR VISABLE FUEL DRIPS FROM FUEL SUMP DRAINS AND FUSELAGE DRAIN HOLES WITH NO FUEL LEAKS OR FUMES DETECTED IAW MM 28. PILOT PERFORMED OPERATIONAL FLIGHT OF THE AIRCRAFT WITH MAINTENACE IN THE BACK TO SEE IF THE FUEL ODOR WAS DUPILICATED WITH NO DISCREPANCIES NOTED