As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU START AT TOP OF DESCENT FAILED. GOT 100 PERCENT THEN AUTO SHUT DOWN. "APU FAULT" ON EICAS. ACCOMP BITE OF APU ECU FOUND LOW OIL PRESS. VISUAL CHECK APU OIL LEVEL, FOUND LOW, SERVICED APU W/8 PINTS OF OIL. STARTED APU. FOUND OIL LEAKING AT BASE OF LUBE PUMP. REMOVED AND REPLACED PACKINGS ON PUMP AND OIL TRANSFER TUBES PER AMM 49-27-01. LEAK CHECK PEND. RAN APU 4 HRS LEAK CHECK OK.