What was found
ACFT RETURNED, DURING CLIMB AT 17,000 FEET, THE PACK FLOW LIGHT TURNED ON. ACFT WAS SENT TO THE HANGAR AND MX REPLACED THE LT COOLING TURBINE IAW 21-51-01 AND CABIN PRESSURE CONTROL SYS TEST WAS PERFORMED IAW MM 21-31-00, TASK 21-31-00-990-801, TESTED CORRECT. MX PERFORMED OVERWEIGHT LANDING INSP IAW MM 05-51-01, NO DAMAGES WERE FOUND.