As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED CABIN LOST PRESSURIZTION. LANDED STL WITHOUT INCIDENT. FOUND NR 1 PRESSURE CONTROL INOPERATIVE. REPLACED NUMBER ONE CABIN PRESSURE CONTROLLER AND NR 1 AND 2 CABIN PRESSURE SELECTOR. MPN 1304768. SYSTEM GROUND CHECK NORMAL OPERATION. (CLOSED)