As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ON DECENT OILY SMELL FILLED CABIN AND COCKPIT. TURNED OFF RIGHT PACK, ODOR DISSIPATED. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **ORIGINAL REPORT WAS AALA202208118302** MAINTENANCE FOUND THE APU OIL COOLER LEAKING OIL AND REPLACED IT PER AMM 49-91-44. ALSO FOUND THE APU OIL COOLING FAN TRANSFER TUBE LEAKING OIL AND REPLACED IT PER AMM 49-91-44. (AALA202208243688). A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.