What was found
DURNING ICE TEST PNEUMATIC WING A/ICE FAIL CAUTION MESSAGE IN FLIGHT ALL FOUR ANTI ICE LIGHTS WERE ILLUMANATED OPEN NON ICING CONDITION AND ICE DETECTOR OVERRIDE TO ALL. DURING ICE TEST PNEUMATIC BLD 2 LOW TEMP CAUTION MESSAGE IN FLIGHT LEFT TEMP WAS AT TOP OF GUAGE WHILE RIGHT WAS AT BOTTOM.-C/A REMOVED AND REPLACED FAN AIR CONTROL THERMOSTAT #2 AND LINE FORWARD OF THERMOSTAT REF. AMM 36-11-06. AIR BLEED SYSTEM OPS CHECK GOOD REFERING AMM 36-00-00. FOUND PRE-MOD PART IS NO LONGER INTERCHANGABLE. PERFORMED WING A/ICE SYS OPC IAW AMM 30-11-15.OPC GOOD.