What was found
WHILE ON THE RETUEN LEG FROM A MEDEVC WITH ONLY PILOT AND MEDICAL CREW ON BOARD. DURING THE FINAL APPROACH SEGMENT WITH LANDING GEAR EXTENDED, AND VERY SHORTLY AFTER AN ENGINE POWER REDUCTION, A FAINT ODOR OF RAW FUEL WAS DETECTED IN THE CABIN. THE ODOR WENT AWAY WITHIN A FEW SECONDS AND A SUCCESSFUL LANDING WAS COMPLETED WITHIN A MINUTE OF THE OCCURENCE. MAINTENANCE INSPECTED FUEL SYSTEM AND FOUND RH ENGINE FUEL FLOW DIVIDER RETURN LINE FITTING LEAKING. SECURED LINE, LEAK AND FUNCTION CHECKS SATISFACTORY.