What was found
BURNING SMELL IN AFT PART OF CABIN APU RUNNING WITH PACKS ON. FOUND APU BATTERY FAILURE CAUSING ELECTRICAL SMELL WITH ASSOCIATED APU BATTERY CHARGER FAILED. REPLACED BATTERY AND CHARGER.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BURNING SMELL IN AFT PART OF CABIN APU RUNNING WITH PACKS ON. FOUND APU BATTERY FAILURE CAUSING ELECTRICAL SMELL WITH ASSOCIATED APU BATTERY CHARGER FAILED. REPLACED BATTERY AND CHARGER.