What was found
L/E SLAT ASSY DISAGREE, RTFL. FOUND NR 4 LE SLAT SENSOR S285 FAULTED DURING PROX BOX BITE. PRIOR TO SENSOR REPLACEMENT FOUND WIRE LENGTH OF W430-04TB-20 AND W430-04TR-20 TOO SHORT TO SPLICE IN NEW SENSOR. LENGTHENED WIRES BY REPOSITIONING 25577 SHIELD TERMINATION RING REF GNMM. REPLACED SENSOR S285. RERACKED PROXIMITY ELEC UNIT AND OPERATED FLAPS AND SLATS HYDRAULICALLY AND IN ALT MODE. NO FAULTS NOTED, RECHECKED PROX BOX FOR ANY FAULTS. AIRCRAFT L/E SLAT SYS SERVICEABLE. WDM27-88-12 REFERENCED FOR ABOVE SIGN OFF.