What was found
RSW - FLT 932 - EN ROUTE AT 31,000 FEET THE FLOW LIGH TILLUMINATED ON THE PRESSURE CONTROLLER AND THE CABIN STARTED TO CLIMB AT 1000 FT/MIN. THE CREW SWITCHED TO THE STANDBY PRESSURIZATION SYSTEM BUT THE CABIN CONTINUED TO CLIMB AT THE MAX RATE, THE OUTFLOW VALVE WAS FULLY CLOSED. THE CAPTAIN INITIATED A DESCENT TO 10,000 FT AND THE FLOW LIGHT WENT OUT. THE FLIGHT CONTINUED TO ITS DESTINATION. MAINTENANCE SECURED THE RIGHT RAM AIR DUCT AT THE HEAT EXCHANGER PLENUM. (M)