What was found
(CAN) AIRCRAFT HAD SUDDEN DEPRESSURIZATION AT 36000 FT JUST AS DESCENT FOR LANDING WAS INITIALIZED. RAPID DECOMPRESSION, NOV 2010. 1: REASON FOR OUTFLOW VALVE REMOVAL/REPLACEMENT: CAMP NR 210146 + 210161, DUE FOR 1200 HR INSPECTION REQUIRMENTS, P/N ON/OFF: LT 14331-1C S/N OFF 580, S/N ON 724 (OVERHAULED). RT P/N ON/OFF 14331-1C S/N OFF 1581, S/N ON 1581 (REPAIRED). VENDOR OF OUTFLOW VALVES AVMATS/CORPAIR. 2: UNITS INSTALLED ON AIRCRAFT. GROUND RUNS AND PRESSURIZATION CHECKS C/O SERVICEABLE. AIRCRAFT RELEASED BACK INTO SERVICE NOV 23, 2010. 3: AIRCRAFT DEPARTED AFTER APPROXIMATELY 2½ HOURS OF FLYING AT FL 390, THE AIRCRAFT EXPERIENCED RAPID DECOMPRESSION. 4: SERVICE WAS CONTRACTED TO CARRY OUT TROUBLESHOOTING AND REPAIR OF THE AIRCRAFT. THE PRESSURIZATION CONTROLLER WAS REPLACED. P/N ON/OFF 1300-020, S/N OFF 1461, S/N ON 1364. AFTER SEVERAL ATTEMPTS TO REPAIR AIRCRAFT TO FULL SERVICE, THE AIRCRAFT WAS BROUGHT HOME UNDER MEL, S/N ON 1364. AFTER SEVERAL ATTEMPTS TO REPAIR AIRCRAFT TO FULL SERVICE, THE AIRCRAFT WAS BROUGHT HOME UNDER MEL#21-08. 5: TROUBLESHOOTING CARRIED OUT. FOUND S/N 1581 OUTFLOW VALVE WIRED INCORRECTLY FROM REPAIR FACILITY. WIRING ERROR CONFIRMED. OUTFLOW VALVES REPLACED WITH 2 OVERHAUL UNITS FROM ANOTHER VENDOR. LT P/N OFF 14331-1C SN/OFF 1581, S/N ON 1192. RT P/N OFF 14331-1C S/N 724. P/N ON 14331-2C S/N ON 1604. ALSO FOUND DIODES 75D, 76D, AND 77D UNSERVICEABLE CAUSING MANUAL CONTROL OF PRESSURIZATION TO BE ERRATIC AT BEST. DIODES REPLACED WITH NEW. A/C GROUND PRESSURIZATION RUNS CARRIED OUT SERVICEABLE. AIRCRAFT FLIGHT TESTS CARRIED OUT SUCCESSFULLY. NO OTHER ISSUES CURRENTLY WITH AIRCRAFT PRESSURIZATION SYSTEM.