What was found
DURING LINE MAINTENANCE INVESTIGATION OF NR 3 ENGINE EPR PROBLEM, FOUND THE EPR WIRING HARNESS, THRUST BRAKE WIRING AND THRUST REVERSER EMERGENCY DUMP VALVE WIRING CHARRED AND FRAYED DUE TO A PREVIOUS PNEUMATIC DUCT LEAK. REPLACED WIRE NR 3H406E24, 3H2156B24, 3E41L24, 3E379F24, 3E572A24N, 3E573A24N, 3E342K22-RD, 3E378D22-YE, 3E343K22-BL, 3K402C20, 3K404A20N, 3K405J20, 3K438A20N, 3K434A20N IN PYLON LEADING EDGE. ACCOMPLISHED ON ABX NON ROUTINES 105, 106, 107. ALL SYSTEMS OPS CHECKED GOOD IAW DC-8 MM.