What was found
LOSS OF CABIN PRESSURIZATION OCCURRED DURING CRUISE FLIGHT AT 33,000 FEET. OXYGEN MASKS WERE DEPLOYED THROUGHOUT CABIN AND DESCENT WAS MADE TO 10,000 FEET. FLIGHT WAS CONTINUED TO DESTINATION AND AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND LOOSE ELECTRICAL CONNECTION ON PRESSURIZATION CONTROLLER. REPLACED CONTROLLER AND REPLACED AMPLIFIER AS A PRECAUTION. OPERATIONAL CHECK NORMAL AND AIRCRAFT RETURNED TO SERVICE.