What was found
LEFT PACK LIGHT ILLUMINATED ON RECALL. EXTINGUISHED WITH MASTER CAUTION RESET. ACFT GROUNDED. ON PREVIOUS FLT, FOUND PACK ZONE RIGHT CONTROLLER FAULT, STANDBY. PERFORMED IAW FIM 21-62 / 803. PASSED SUSPECT M1443 RT TEMP ZONE CONTROLLER. REMOVED NR 2 RT PACK ZONE TEMPERATURE CONTROLLER IAW AMM 21-61-20-000-801. INSTALLED THE RT PACK ZONE TEMP CONTROLLER IAW AMM 21-61-20-400-801. ACCOMPLISHED PACK/ZONE TEMPERATURE CONTROLLER INSTALLATION TEST IAW AMM 21-61-20-400-801, PARA F, GROUND VERIFICATION TESTED GOOD.