What was found
EICAS STATUS MESSAGES CHECK {B787-05-3-0002} - STATUS MSG WING ANTI- ICE ZONE. RAN SYS TEST TEST FAILS MAINT MSG 30-20084 WIPCU ZONE CONTROL CARD 24 HAS AN INTERNAL FAULT. WIPCU ZONE CONTROL CARD 24 FAULTING CW MEL OK TO DEFER WIPS ZONE REMOVED AND REPLACED CIRCUIT BOARD CARD ZONE CONTROLLER #24 FOR THE WING ANTI ICE SYSTEM, OPS CHECK PER AMM DMC B787-A-30-10-F1-28A-421A, TEST PASSED, MSG SHOWED NOT ACTIVE. PARTS USED: 78-3011-9-9001,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1605668 SN OFF 0178 IPC REFERENCE # 30-11-04 BOARD, CIRCUIT, OFF 78-3011-9-9001 8178 ON 78-3011-9-9001 7725