As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: OIL SMELL IN CABIN WITH EVIDENCE OF OIL LEAK OR INGESTION ON APU; APU DISPATCHED ON 10-DAY MEL DEFERRAL. REPLACED APU OIL COOLER WITH NEW IAW TASK CARD 26L31049004 AND ACCOMPLISHED SATISFACTORY LEAK AND OPERATIONAL CHECKS. ALSO REPLACED APU OIL COOLER FAN WITH NEW IAW AMM 49-52-51. ACCOMPLISHED SATISFACTORY LEAK AND OPERATIONAL CHECKS.