What was found
FLT 1818 - 33,000 FEET ON DESCENT, EXPERIENCED RAPID PRESSURE LOSS IN AIRCRAFT, UNDER CONTROL BY 10,000 FEET CABIN ALTITUDE. PASSENGER OXYGEN MASKS DEPLOYED. AIRCRAFT MADE AN UNEVENTFUL LANDING AT PIE. REPLACED CABIN PRESSURE CONTROL PANEL AND CABIN PRESSURE CONTROLLER. ALL CHECKS NORMAL. AIRCRAFT RETURNED TO SERVICE.