What was found
MCI - FLT 136 - CAPTAIN REPORTED PRESSURIZATION LOSS AND DESCENDED TO 10,000 FEET. CAPTAIN COULD NOT REGAIN CONTROL OF CABIN UNTIL LEVEL OFF AT 10,000 FEET. EMERGENCY WAS DECLARED FOR THE EMERGENCY DESCENT. THE OXYGEN MASKS WERE NOT DEPLOYED. FLIGHT DIVERTED TO MCI AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE CABIN PRESSURE CONTROLLER. ACCOMPLISHED TEST PER MM 21-31-00. OPS CHECK NORMAL. (M)