What was found
AT FL290 ON DESCENT, THE AIRCRAFT LOST AUTO PRESSURE CONTROL. CREW ATTEMPTED MANUAL CONTROL BUT RIGHT PACK WENT INTO OVERHEAT CONDITION AND SHUT DOWN. CABIN CLIMBED AT 1500 FPM, CREW DECLARED AN EMERGENCY, PERFORMED COM PROCEDURES, AND QUICKLY DESCENDED. PACK REACTIVATED DURING THE DESCENT, MASK DID NOT DEPLOY, AND THE AIRCRAFT LANDED UNEVENTFULLY AT CLT. BITE SHOED FAILED ALTITUDE ON BOTH AUTO PRESSURE CONTROLLERS. MAINTENANCE REPLACED THE AUTO TEMPERATURE CONTROLLER ON THE RIGHT PACK. MEL'D THE LEFT PACK AND AIRCRAFT RETURNED TO SERVICE.