As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, THE AIRCRAFT LOST CABIN PRESSURIZATION AND THE OXYGEN MASKS DEPLOYED. EMERGENCY DESCENDED AND DIVERTED TO BHM AND LANDED WITHOUT FURTHER INCIDENT. REPLACED THE LEFT FLOW CONTROL VALVE AND LEFT UPPER AIR CONDITIONING PRESSURE REGULATOR VALVE, OPERATIONAL CHECK GOOD.