What was found
ETOPS SIGNIFICANT SYSTEM, CABIN TEMPS ON THE GRN PRIOR TO DEPARTURE VERY HOT BOTH PACKS ON ALL TROM VALVES CLOSED PACK OUT L NO READING, R- -2, DUCT PRESS L 32, R 32, PACK FLOW L 0,R 0, RAM AIR DOOR L 0.0, R 0.02, CABIN TEMPS F80, M82, A82. PERFORMED BITE OF ZONE TEMP CONTROLLER PER FIM 21-60-00 AND BITE OF BOTH PACK CONTROLLERS PER FIM 21-51-00 NO FAULTS NOTED HEATED A/C TO 80 THEN COOLED TO 68 IN 10 MIN REMOVED AND REPLACED L PACK TEMP SENSOR PER AMM 21-51-08, OPS CK GOOD.