As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. FLIGHT CREW REPORTS STRONG ODOR IN CABIN. MAINTENANCE FOUND APU OIL INGESTION DUE TO LEAK AT LUBE FILTER BOWL. REPLACED O-RING ON APU LUBE FILTER BOWL PER AMM 49-91-41. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK. ACCOMPLISHED APU SMELL IN CABIN CARD 05-96-85, AND DECONTAMINATION CARDS 05-96-87 AND 05-96-86 PER E58 9686648.