What was found
RT PACK ILLUMINATED ON RECALL. LIGHT RESETS AND EXTINGUISHED ON RESET MASTER CAUTION. ACFT GROUNDED. PERFORMED BITE TEST OF THE NR 2 PACK ZONE TEMP CONTROLLER AND FOUND TCV FAULT IAW AMM 21-51-00-700-803. RT PACK RAM AIR ACTUATOR FAILED VERIFY TEST ON THE NR 2 PACK ZONE TEMP CONTROLLER. REMOVED AND REPLACED THE RT PACK RAM AIR INLET ACTUATOR IAW AMM 21-51-21/401, ADJUSTMENT TEST PASSED. VERIFIED THE RT TEMP CONTROL VALVE FAILED IAW BITE TEST IAW AMM 21-61-00. REMOVED AND REPLACED THE RT TEMP CONTROL VALVE IAW AMM 21-51-10. LEAK AND BITE CHECKED GOOD.