What was found
AT CRUISE ALTITUDE, F/A'S REPORT STRONG ODOR SIMILAR TO FUEL EMINATING NEAR EXIT ROWS. CYCLING PACKS IAW COM PROCEDURE AS WELL AS FUEL LEAK PROCEDURE DID NOT CLEAR ODOR. F/A'S REPORT ODOR WORSENING, MOVING AFT AS DECENT, LANDING MADE. ON THE GROUND FLIGHT WALK THROUGH CABIN, CA & F/O WE NOTICED LINGERING ODOR SIMILAR TO FUEL. NOTE WE DID NOT SMELL ANY ABNORMAL ODOR IN FLIGHT DECK WHILE IN FLIGHT. PERFORMED TSM 28-00-00-810-801A. NO FUEL LEAKS FOUND BELOW CABIN FLOOR, 241HF, 242HF, VISUAL INSPECTION OK. NO FUEL LEAKS NOTED ON INSULATION, FRAME OR BLANKETS IAW TSM. REPLACED LT & RT RECIRCULATION FILTERS IAW AMM 21-21-41. INSPECTED CARGO COMPARTMENT, FUSELAGE AND APU. NO INDICATION OF FUEL LEAK NOTED AT THIS TIME. RUN ENGINES FOR MORE THAN 40 MIN. NO ODOR NOTED, REF AMM 71-00-00. FUEL FLOW SAME ON BOTH ENGINES.