As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLIGHT DEPARTED WITH CPC CH 1 INOP. AFTER DEPARTURE, THE REMAINING CABIN PRESSURE CONTROLLER FAILED. MASKS DID NOT DROP. CA INITIATED EMERGENCY DESCNT. CABIN PRESSURE NEVER EXCEEDED 7500`. NO EMERGENCY DECLARED WITH ATC T/S CARRIED OUT, NO FAULT FOUND. CPCS OUTFLOW VALVE REPLACED IAW AMM 21-31-02 OPERATION CHECK SERVICEABLE.