What was found
EMERGENCY DECLARED. MOMENTARY CABIN ALTITUDE ALERTS IN FLIGHT FL 320 WITH RIGHT PACK ON, LEFT PACK OFF, RESTORED LT PACK IAW QRH CHECK LIST. CABIN CONTROLLABLE, NORMAL, PERFORMED MANUAL MODE CONTROL TEST OF CABIN PRESSURE CONTROL SYSTEM IAW AMM 21-31-00. OP CHECKED GOOD. PERFORMED OP CHECK OF PACK FLOW CONTROL VALVE IAW AMM 21-51-01. OP & LEAK CHECKED GOOD. R & R NR 1 AUTO PRESSURE CONTROLLER IAW AMM 21-31-02. OP CHECK GOOD. PLACARD REMOVED, DMP REVERSED.