What was found
AIR RETURN AND EMERGENCY EVACUATION DUE TO SMOKE IN COCKPIT AND CABIN. INSPECTION ACCOMPLISHED AND FOUND NR 1 ACM AT FAULT. REMOVED AND REPLACED ACM IAW AMM 21-51-05. ACCOMPLISHED EC E14-150-01. FURTHER INSPECTION FOUND LT PACK CONDENSER INLET TEMP SENSOR AND PACK OUTLET TEMP SENSOR WIRING CROSSED. RESTORED WIRING TO NORMAL CONFIGURATION. PERFORMED OPS CHECK OF BOTH LT & RT PACKS IAW AMM 21-51-00-710-801-A. WITH NO DEFECTS NOTED.