As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FL 1919 - AT ROTATION, CREW NOTED A PRESSURIZATION BUMP, EXCESSIVE CABIN RATE-OF-CLIMB, AND AUTO PRESSURIZATION 'INOP' LIGHT. FLIGHT RETURNED TO CLT AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE FOUND THE OUTFLOW VALVE MOTOR BAD AND REPLACED THE OUTFLOW VALVE. (M)