What was found
ELECTRICAL WIRE SMELL CAME FROM F/O VENT AREA UNDER EFB FOR 2 MIN AND WENT AWAY DURING DESCENT, SMELL CAME BACK FOR APPOX 2 MIN & WENT AWAY PERFORMED INSP OF FWD E&E COMPARTMENT . REMOVED AND REPLACED RT RECIRC FAN AS A PRECAUTION, RAN ENGINE TO SIMULATE DISCREPANCY, NO DEFECT NOTED AT THIS TIME. A/C OKAY TO CONTINUE MM REF 05-51-58 PAGE 201-209. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1334021, S/N OFF 00565 FAN, AIR, CABIN, OFF 53-2125-9-0001 0565, ON 53-2125-9-0001 0187.