What was found
ENROUTE DTW-CLT, CABIN PRESSURE WARNING AND MASTER WARNING LIGHTS ILLUMINATED AT 33,000 FEET. ACCOMPLISHED DESCENT TO 15,000 FEET AND CABIN PRESSURE WAS REGAINED. FLIGHT CONTINUED TO DESTINATION, AND LANDED WITHOUT INCIDENT. FOUND CLAMP LOOSE, AND DUCT DISCONNECTED AT MOISTURE SEPARATOR. INSTALLED NEW CLAMP, AND RECONNECTED DUCT. LEAK AND OPERATIONAL CHECK OK. AIRCRAFT RETURNED TO SERVICE.