What was found
CABIN ALT WARNING IN FLIGHT AT FL320. IT STAYED ON THROUGHOUT EMERGENCY DESCENT. FLIGHT 5071. PERFORMED TROUBLESHOOTING OF AIRCRAFT PRESSURIZATION SYSTEM PER FIM TASK, UPON TROUBLESHOOTING FOUND CABIN PRESSURE SELECTOR PANEL ASSEMBLY FAULT LIGHT TO BE ILLUMINATED AND SUSPECT THE CONTROL VALVE WITHIN THE ASSEMBLY TO BE FAULTY, REMOVED AND REPLACED CABIN PRESSURE SELECTOR PANEL ASSEMBLY WITH A SERVICEABLE UNIT PER CRJ200 AMM TASK, PERFORMED SEVERAL AIRCRAFT PRESSURIZATION CYCLES TO ATTEMPT TO RECREATE FAULT CONDITION, BROUGHT AIRCRAFT CABIN TO 2.5 DELTA P WITH NO ISSUES AND AIRCRAFT EASILY MAINTAINED THAT PRESSURIZATION CONDITION, ALSO INSPECTED PRIMARY AND SECONDARY OUTFLOW VALVES WITH NO FAULTS FOUND AS WELL AS THE AIRCRAFTS CARGO DOOR SEAL WITH NO FAULTS FOUND, AIRCRAFT GOOD FOR SERVICE.