As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO AMA DUE TO THE FLIGHT CREW REPORTING THAT WITH THE #2 GENERATOR INOPERATIVE AND ON MEL, THE APU AUTO SHUT DOWN IN FLIGHT AT FL 330. THE AIRCRAFT LANDED SAFELY AT AMA AND TAXIED TO THE GATE UNDER ITS OWN POWER. MAINTENANCE REPLACED THE APU LOW OIL PRESSURE SWITCH AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 49-94-14.