What was found
RAMP PERSONNEL UNLOADING THE AFT CARGO BAY, REPORTED STRONG FUEL ODOR. ODOR VERY STRONG COMING FROM THE LEFT WALL VENT. LT AFT AND CENTER CARGO DOORS OPENED FOR VENTILATION. FOUND FUEL LEAKING FROM COUPLING, LT SIDE WALL OF CENTER CARGO COMPARTMENT. LEAKING COUPLER LOCATED ON TAIL TRANSFER FUEL LINE. REMOVED COUPLING AND AJOINING PARTS, R & R O-RINGS ON TAIL TRANSFER LINE COUPLING IAW MM 28-00-00-4. LEAK CHECKED GOOD. RETURNED TO SERVICE.