As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AIRCRAFT SLOW TO PRESSURIZE, PRESSURE CONTROLLER BITE CHECK CARRIED OUT AND FWD OUTFLOW VALVE FOUND STICKING. REAR OUTFLOW VALVES NOT RESPONDING IN BOTH AUTO AND MANUAL MODES. FWD OUTFLOW VALVE AND ACTUATOR REPLACED, REAR VALVES CLEANED.