As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SDF - INFLIGHT MIA-DTW. CREW REPORTED AUXILIARY POWER UNIT AUTO SHUTDOWN AND LEFT ENGINE GENERATOR ON MEL. EMERGENCY DECLARED FLIGHT DIVERTED SDF LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND APU OIL QUANTITY LOW. SERVICED APU OIL TO FULL AND OPERATED WITH NO FAULTS. SYSTEM GROUND CHECK NORMAL OPERATION.