What was found
RIGHT PACK LIGHT ILLUMINATED ON THE GROUND SHORTLY AFTER BRINGING BOTH RACKS TO AUTO. TURNED UP TEMPERATURE CONTROLS AND ATTEMPTED TRIP RESET, BUT LIGHT REMAINED ILLUMINATED. GROUNDED - YES. (RESOLVED ON W/O: 1973569 TASKCARD: N/R-00001 ) REMOVED AND REPLACED RH AIR CYCLE MACHINE IAW AMM 21-51-04. OPS CHECK GOOD. NO DEFECTS NOTED. BITE CHECK GOOD. MAINTENANCE PROCEDURES REVERSED, PLACARDS REMOVED. REACTIVATED RH PACK AIRFLOW SHUT OFF VALVE IAW AMM 21-00-00/901. MMEL 21-2. REVERSED FWD CARGO HEAT DUCT IAW AMM 21-00-00/901. CLEAR DEFECT. SEAMC WILL NOTIFIED.