What was found
FOUND CMCF EXISTING FAULT MESSAGE SHOWN 33-11331,REF TO HAECO NO N-ROUTINE LOG PAGE NO.9473445,ORIGINATED BY EMP V903179,EA 4400- 01112 REV A OP 001. PERFORMED BY EMP V903179, IDT BY EMP V903689,PERFORMED T/S FOUND CLASS 31 WBU FAILED,THEN REPLACED THE DEFECTIVE WBU AND PERFORM ED INSTALLATION TEST,THE RESULT FOUND NORMAL.REFER FIM 33-50-F1- 67A-421A-A REV 137 AMM 33-51-07-02B-520A/720A-A REV 155.