What was found
FLT# 2074, LAX-EWR. CABIN AND COCKPIT ODORS DURING CLIMB OUT, ODORS DISSIPATED AT CRUISE THEN ODORS REUMED DURING DESCENT, ODORS CONSISTENT WITH DIRTY SOCK SMELL.; C/W INFO NOTICE 2017-T015M , FOUND ENG #1 AS SOURCE OF ODOR EVENT. R/R ENG #1 SEE LP 4756175-2. PERFORMED LEVEL C DECONTAMINATION WITH ENG #1 PER AMM 21-00-00-615-804. REPLACED OZONE FILTER SEE LP 4756181-1 AND RECIRCULATION FILTER SEE LP 4756181-2. NO ODOR SMELL AT THIS TIME.