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 AN THE AIRCRAFT DIVERTED TO ATL DUE TO AUTO PRESSURIZATION FAILURE. THE AIRCRAFT LANDED SAFELY AT ATL. AIRCRAFT WAS ON AN MEL FOR CABIN PRESSURE CONTROLLER #2 INOPERATIVE. MAINTENANCE REPLACED THE OUTFLOW VALVE PER AMM 21-31-03 (AALA202503086361) AND THE #2 CABIN PRESSURE CONTROLLER REF AMM 21-31-01 (AALA202503089000). ACCOMPLISHED SATISFACTORY LEAK AND OPERATIONAL CHECKS.