As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU IS LEAKING OIL FROM THE DRAIN MAST CAUSING A PUDDLE ON THE GROUND & IS 1 QUART LOW. PERFORMED DRAIN MAST INSPECTION REF MM 49 16 11 200 801 RAN APU FOR 10 MINS & MIDDLE DRAIN IS LEAKING OIL (LOAD COMPRESSOR SEAL). REPLACED APU REF AMM 49 11 00.