As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: WHILE EN ROUTE TO DEN AT FLIGHT LEVEL 260 FLIGHT DECLARED EMERGENCY WITH KANSAS CENTER ON ACCOUNT OF BOTH AUTO PRESSURIZATION SYSTEMS FAILED. FLIGHT DECK CONTROLLED PRESSURIZATION MANUALLY AND ALTITUDE WAS NOT OUT OF LIMITS. MASKS DID NOT DEPLOY AND NO INJURIES REPORTED. FLIGHT LANDED WITHOUT INCIDENT IN DEN. REPLACED NUMBER 1 AND NUMBER 2 (AALA202112238324) CABIN PRESSURE CONTROLLER PER AMM 21-31-01.