What was found
UNABLE TO CONTROL PRESSURIZATION DURING CLIMB IN ALL MODES. FOLLOWED ABNORMAL PROCEDURES PER FLIGHT MANUAL BUT CABIN CONTINUED TO CLIMB. FOUND RIGHT PACK WATER SEPARATOR PLENUM AND CHECKED VALVE COCKED AND MIS-ALIGNED CANNISTER GASKET MISSING A SECTION. REPOSITIONED AND INSTALLED NEW PACKING, CHECKED PNEUMATIC SYSTEM PER MM 36-12-01. NO DEFECTS NOTED. GROUND RAN ENGINES, OPS CHECK OK PER MM 21-31-00.