As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE THE CREW REPORTED THAT THE AUTO-PRESSURIZATION FAILED AND DECLARED AN EMERGENCY DIVERTING TO AEX WHERE THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE PNEUMATIC OUTFLOW VALVE, PERFORMED OPERATIONAL CHECKS AND CLEARED THE DISCREPANCY.