As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: DURING TROUBLESHOOTING OF MIC 1324327, UPON ENGINE 2 START UP, BURNED OIL WAS SMELLED IN CABIN (SOF EVENT). ACCOMPLISHED J/C 08L00021001 AND FOUND APU TO BE THE SOURCE OF ODOR, REMOVE AND REPLACED APU LUBE MODELE. PER AMM 49-91-11. OPERTIONAL CHECK AND LEAK GOOD.