What was found
AFT FA AND IN ROWS 22 + 35 SMELLED ELEC BURNING SMELL FOR 10 SEC S. NO FURTHER SMELL AFTER THAT SPOKE TO CREW. FLIGHT ATTENDANT REPORTED THAT THE BURNING SMELL FORM ATTACH TO LOG PAGE. CAME FROM A PAX FINDINGS. AT THE MOMENT OF OCCURANCE AFT FLIGHT ATTENDANT SAID THE OVENS WERE RUNNING AND DID NOT SMELL ANYTHING. PERFORMED INSPECTION OF CABIN ELECTRICAL SYSTEMS IAW AMM PERFORMED ENGINE RUN REF AMM 05-51-56-940-801 UP TO STEP D(20). 05-51-56-940-801-C1 UP TO AND INCLUDING STEP D(8). COULD NOT NO SMOKE DETECTED. FOUND R RECIRC FAN INOP. FIND SOURCE OF ELECTRICAL BURNING SMELL. AMM TASK CONTINUES WITH REQUIREMENT OF ENGINE RUNS TO CHECK FOR FURTHER SOURCES. ADD EMP:U210186 SEE L/P 5748449. "RIGHT RECIRC FAN" REPLACED FOR CORRECTIVE ACTION. R RECIRC FAN INOP.FAN, CABIN AIR OFF 76-2126-9-001 4557 ON 76-2126-9-0001 2140 FAN, CABIN AIR OFF 76-2126-9-0001 4557 ON 0000R&R RIGHT RECIRCULATION FAN AMM REF 21-25-01/401 OPS CHECK GOOD.PARTS USED: 76-2126-9-0001,QTY :1 1665971,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1665971 SN OFF 4557