As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED APU SHUTDOWN UNCOMMANDED WHILE CLIMBING THROUGH ROUGHLY 24,000 FEET. RESTART OF APU ATTEMPTED AND RESTART FAILED. CREW DIVERTED AND LANDED WITHOUT INCIDENT. MX INSPECTED APU AND FOUND OIL LEVEL TO BE LOW. MX SERVICED APU AND PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SERVICE.