As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT DIVERTED TO CLT ON ACCOUNT OF ELECTRICAL ISSUE/LOSS OF APU. EMERGENCY WAS DECLARED. APU AUTO SHUTDOWN. MAINTENANCE REMOVED AND REPLACED LOW OIL PRESSURE SWITCH, AND DE-OIL SOLENOID VALVE IAW AMM 49-91-49, OPS CHECK GOOD. (SEE SDR # AALA201907089013)