As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW NOTICES SMELL OF BURNING OIL/FUMES ON CLIMB AND DESCENT LOW POWER SETTINGS. REMOVED AND REPLACED APU, IAW BD-100 49-11-02. NO DEFECTS NOTED AT THIS TIME. ALL RII PROCEDURES COMPLIED WITH P/N OFF/ON: 3800774-1 S/N OFF: P-504 S/N ON: P-151.