What was found
DURING FLIGHT, THE LEFT HAND PACK TEMPERATURE WAS UNCONTROLLABLE AND CAUSED SMOKE TO ENTER THE FLIGHT DECK. THE CREW TURNED THE LEFT HAND PACK OFF AND THE SMOKE CLEARED THE FLIGHT DECK. THE AIRCRAFT LANDED AT PIT WITH NO FURTHER INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE TEMPERATURE CONTROL VALVE IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 21-63-06. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.