What was found
FLT#190, SAN-JFK. "INFLIGHT ADVISED REACHING TO GATE OF AN ODOR EVENT DESCENDING THROUGH 20,000 FT PLATIC BURNING DIRTY SOCK SMELL IN AFT JUMPSEAT. ALSO SMELLED IN ROW 8 JUMOSEAT BUT TO LESSER EXTENT ROW 8 ADVISED ODOR AS WELL BUT MORE FAINT; PERFORMED LEVEL A DECONTAMINATION. CHANGED RECIRCULATION FILTERS AS PRECAUTION . NO ODOR NOTED IN CABIN IAW AMM 21-00-00-615-802-A. A/C GOOD FOR CONT SVC . C/W INFO NOTICE 2017-T015L. FOUND FCU DRAIN MASK LEAKING . AS PER AMM 49-00-00-200-811. FCU NOT IN STOCK . APU DEFFERED."