What was found
LT PACK TRIP LIGHT COME ON ON THE GROUND AND LIGHT SMOKE IN COCKPIT, DEFERRED LT AC PACK PER MEL 21-38 CAT C SPECIAL PROCEDURE 21-38 CW A/C RESTRICTED TO FL 250 PLACARD INST DMI 22107. LT PACK TRIP LIGHT CAME ON ON THE GROUND & LIGHT SMOKE IN COCKPIT. R&R LT PACK COOLING FAN. UPON FURTHER SYSTEM INSPECTION FOUND ACM TURBINE DISCHARGE DUCT CLAMP MISSING INSERTS & SLEEVE, R&R CLAMP ASSY P/N CF15-250.PACK CKS OK IAW 21-55-00 DMI CLEARED.