As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT REPORTED BY AFT F/AS DURING CLIMB THROUGH FL 180. PERFORM TSM INSPECTION IAW TSM 05-50-00-810-831-A, FOUND APU OVER SERVICED. DRAINED APU IAW AMM 49-90-00 APU DRAINED TO WITH LIMITS OPS CHECK GOOD PERFFORMED OPS CHECK OF BOTH PACKS IAW 21-61-00 OPS CHECK NO SMELL PRESENT VERFIED BY REPORTING FA OK FOR SERVICE.