What was found
RT PACK LIGHT ILLUMINATED ON RECALL. ACFT GROUNDED. ACCOMPLISHED PACK FLOW TEMP CONTROLLER BITE PROCEDURE. LEFT CONTROLLER GROUND TEST PASS, NO FAULTS NOTED. RIGHT CONTROLLER SHOWED FAULT CODES 21-51510 TEMP CONTROL VALVE, 21-51260 MOTOR OPEN AND 21-51267 TVC ON EXISTING FAULTS. FAULT HISTORY SHOWED SAME FAULTS ON LAST 3 FLIGHT LEGS, IAW AMM 21-61-00-740-801-002. REMOVED AND REPLACED RIGHT PACK TEMP CONTROL VALVE, OPS CHECK, LEAK CHECK GOOD, REF CMM 21-50-83. PERFORMED RIGHT CONTROLLER BITE PROCEDURE GROUND VERIFICATION TEST, PASS, NO FAULTS NOTED, IAW AMM 21-61-00.