What was found
(CAN) WHEN DESCENDING THROUGH FLIGHT LEVEL 330 AND CABIN ALTITUDE AT 10,000 FEET, MASTER WARNING CABIN PRESSURE ON FOLLOWED BY RAPID DEPRESSURIZATION. EMERGENCY DESCENT DRILL CARRIED OUT, CABIN DID NOT EXCEED 10,000 FEET, BUT WAS VERY SLOW TO COME DOWN, PACK PRESSURE VERY SLOW. FOUND ONE CLAMP OFF WATER SEPARATOR RT SYSTEM DUCT AND ONE CLAMP OFF LT AIR CYCLE MACHINE DUCT, CLAMPS INSTALLED AND SYSTEM SERVICEABLE.