What was found
ETOPS, ENGINE 2 AIR EXCHANGE FAULT ON ROLL OUT. T/S PER A330 TSM 79-20-00-810-810-A NR 2 ENGINE FADEC TEST OK. EXAMINED HEAT EXCHANGER FOR DAMAGE AND VALVE OPERATIONS, NO TROUBLE FOUND. PERFORMED ENGINE RUN, OPERATIONS NORMAL. NO CURRENT FAULTS. REMOVED AOHE, PER A330 AMM 79-21-51. INSTALLED AOHE, PER A330 AMM 79-21-59, NO LEAKS FOUND MESSAGE CLEARED. UNSUCCESSFUL PARTS CHANGE SENT TO RECORDS 10671.