What was found
FLT 66 - HNL-OGG - PRESSURIZATION AUTO FAIL LIGHT ILLUMINATED AT 14,000 FT AND STANDBY LIGHT CAME ON. SWITCHED TO STANDBY MODE. CABIN RATE STARTED CLIMBING AND DESCENDING AT 4,000 FPM. SWITCHED TO MANUAL DC THEN AC MODE AND STILL UNABLE TO CONTROL PRESSURIZATION. DECLARED AN EMERGENCY AND DESCENDED TO 5400 FEET AND UNABLE TO CONTROL PRESSURE. UNEVENTFUL LANDING IN OGG. AIRCRAFT FERRIED TO HNL. REMOVED AND REPLACED CABIN PRESSURE CONTROLLER. GROUND CHECKED OK PER MM 21-31-00. AIRCRAFT RETURNED TO SERVICE. (M)