What was found
ANTI SKID INOP ILLUMINATED ATTEMPTED TO RESET ANTISKID. NO HELP. PERFORMED AACU BITE PER FIM 32-42 TASK 801. SHOWS FAULT "XDCR 4" R&R XCDR #4 REF AMM 32-42-11. PERFORMED FIM 32-42 TASK 806. T395 TRANSDUCER READS 625 OHMS AT 120 DEG F. CHECKED RESISTANCE BETWEEN AACU D1040A B5 TO D11126 PIN 1 AND D1040 B6 TO D11126 PIN 3, FOUND OPEN CIRCUIT ON BOTH PINS. SUSPECT WIRING. PERFORMED FIM 32-42 TASK 829 NO DEFECTS NOTED, ANTI SKID INOP LIGHT NOT ILLUMINATED AT THIS TIME, UNABLE TO DUPLICATE FAULT. DUE TO PREVIOUS HISTORY OF XCDR #4 FAULT PERFORMED CONT CHECKS FROM AACU (D1040A) PIN B6 AND B5 TO XCDR 4 (D11126) PIN 3 AND 1, WIRES CHECK GOOD. SUSPECT BAD XCDR 4. REF FIM 32-42 TASK 806. ANTISKID SYS VERIFIED TO HAVE NO ADDITIONAL FAULTS. THRUST REVERSERS OPERATES NORMAL. AUTOBRAKE CONSIDERED INOP AND SECOND DEFERRAL CREATED. PERFORMED AACU BITE PER FIM 32-42 TASK 801 AND VERIFIED FAULT IS LIMITED TO OUTBD CHANNEL. INBD CHANNEL OPS NORMAL. ANTISKID OUTBD CIRCUIT BREAKER PULLED AND COLLARED ON P6-3 PANEL,NO FUALTS NOTED AT THIS TIME.