What was found
DURING CLIMB, THE ACFT RETURNED DUE SMOKE ODOR IN PAX CABIN. FIM 21-20-00-801-810-A WAS PERFORMED SMOKE & OR ABNORMAL SMELL IN PAX CABIN & OR COCKPIT & FOUND CABIN SUPPLY DUCT FROM RECIRCULATION SYS DAMAGED. FIM 21-20-00-810-801-A COMPONENTS OF GALLEY AREA & LAVATORIES AREAS WERE INSPECTED ELEC COMPONENTS AROUND THE SEAT IFE, PCU, AC OUTLET & LIGHT, THE ELEC WINDSHIELD HEATER SYS, FBW BACKUP BATTERY TERMINALS & DU`S WERE INSPECTED ALL ARE NORMAL. REPLACED THE RECIRCULATION DUCT ON FWD CARGO COMPARTMENT, INSTALLED & POSITIONED CORRECTLY IAW AMM 21-24-03-400-801-A. PERFORMED FOR SIGNS OF AIR LEAKAGE CHECK & NO LEAK FOUND. PERFORMED START OF ENGS IAW AMM 71-00-01-910-801-A FOR SMELL SMOKE CHECK & SMELL SMOKE NOT PRESENT, ALL IS NORMAL. DUE SINK RATE WAS NOT HIGHER THAN 300FPM+D38 IAW PILOT REPORT THE ACFT IS OK, NO MX ACTIONS REQUIRED IAW AMM 05-20-27-210-801-A FIG 601. THE ACFT RETURNED TO NORMAL OPERATION.