What was found
SHIP 5654 -DIV/PRES/DE- UNABLE TO MAINTAIN CABIN PRESSURE, PERFORMED AN EMERGENCY DESCENT. CORRECTIVE ACTION: T/S R/R THE CPC 1, EQUIPMENT OVERBOARD VALVE, CABIN SELECTOR PANEL, CABIN OUTFLOW VALVE AND REMOVED AND INSTALLED DUCT "Y" ASSY AND ELBOW. C/W NO GO ODI PREVENTION PROGRAM, EXCESSIVE CABIN PRESSURE LEAKAGE TEST AND SINGLE PACK PRESSURIZATION CONFIDENCE CHECK. ALL TEST PASSED.