What was found
OPEN - ETOPS SIGNIFICANT SYSTEM - FLIGHT DECK TEMP DIFFICULT TO CONTROL EITHER TO HOT OR TOO COLD. ZONE TEMP INDICATION OVERSHOOTS TO HIGH OR LOW. COCKPIT ZONE TEMP ROTARY SELECTOR, DOES NOT SEEM TO RESPOND IN THE MID RANGE 12 O'CLOCK POSITION. RESET PACK CONTROLLER 1 + 2, ZONE CONTROLLER, CHK COCKPIT ZONE SENSOR. PERFORMED SYS TEST OF PACK CONTROLLING AND INDICATION PER AMM 21-53-00-710-802-A. OK FOR SVC.