As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH INBOUND W/U OF ODOR IN CABIN. C/W W/C 0550-2001. #1 ENG IDENTIFIED AS CAUSE OF SMELL @ 180K PARTICULATE COUNT. #1 ENG IS SOURCE OF SMELL, MEL 36-12-00A APPLIED AS WELL AS MON LOG FOR ENG WASH. C/W 0550-2003. RECIR FILTERS REPLACED. NO FINDINGS OF OIL PACK SYS. C/W W/C 0550-9001-A220. (LP# 1267703)