What was found
LE FLAPS TRANSIT LIGHT STAYED ON AFTER FLAP RETRACTION LE DEVICE NUMBER 4 ACP BITE OF FSEU NO EXISTING FAULTS FOUND. FOUND FAULT HISTORY FLT LEG 0 F4 PROX EXTEND WITH MSG 27-81223 & FLT LEG -001 R 28VAC EXC INV MSG 27-53280. PARTS USED: 1-899-29,QTY :1 CW FIM TASK #27-88-00-806 FLAP EXTEND DISAGREE PROBLEM, FOUND IAW AMM TASK 27-81-00-860-803 #4 PROXIMITY SENSOR (S175) RESISTANCE HIGH (OUT OF ACCEPTABLE RANGE) REMOVED AND REPLACED #4 SLAT PROX S/W (S175) IAW AMM 27-88-11-400-802 LEADING EDGE FLAPS AND SLATS EXTENSION GOOD