What was found
DURING FINAL 10-15 MIN OF FLIGHT, ODOR DETECTED BY ALL 4 CREW AND PASSENGERS. SEEMED TO SMELL LIKE BURNING PLASTIC, SUSPECTED IT WAS COMMING FROM BLEED AIR/ ENVIROMENTAL SYS, ISOLATED TO RECIRCULATING FAN. PLACED RECIRCULATING FAN ON MEL 21-20-2. CLEARED BY: R & R RECIRCULATING FAN FILTER IAW 21-22-22-000-801 AND 21-22-22-400-801 PERFORMED OPS TEST OF RECIRCULATING FAN IAW 21-22-16-710-001. OPS CK GOOD, NO FURTHER ODOR NOTED. ALSO PERFORMED A GVI OF THE COFFEE WARMERS AND NO DEFECTS NOTED. RETURNED TO SERVICE.