What was found
RIGHT PACK TRIPPED. RESET FOR 2 MINUTES. THEN TRIPPED AGAIN. WOULD NOT RESET THE SECOND TIME. ACFT GROUNDED. PERFORMED RESTORATION OF THE RT AIR CONDITIONING PACK IAW AMM 21-00-00-040-804. REPOSITIONED THE FWD CARGO HEAT DUCT SOV TO THE OPEN POSITION. REPOSITIONED RIGHT PACK AND RECIRCULATION SWITCH BACK TO THEIR NORMAL POSITIONS. GROUND RAN RT PACK FOR 3 HOURS. NO TRIP FAULT OCCURRED. ACCOMPLISHED AMM 21-61-00-700-806-002, PACK/ZONE TEMPERATURE CONTROLLER BITE TEST. FOUND TCV FAULT LOGGED ONE TIME. GROUND RAN RT PACK NO FAULTS LOGGED. SYSTEM CHECKED NORMAL. AS A PRECAUTION, REPLACED THE RT PACK DISCHARGE OVERHEAT SWITCH IAW AMM 21-51-42. WD 21-51-25. GROUND RAN RT PACK NO FAULTS LOGGED. SYS CHECKED NORMAL.