What was found
L HYD PRESS & RUD RATIO EICAS, ABORTED TAKEOFF. ACP INSPECTION. ENERGY LEVELS FOUND TO BE IN THE NO SPECIAL PROCEDURE RANGE. ACP VISUAL INSPECTION OF WHEELS AND BRAKES, WITH NO DEFECTS NOTED. FAULT RECURRED 5 SEGMENTS LATER. FOUND WIRE SHORTING TO GRD AT S27. REPAIRED WIRING AND REPINNED D3100. ABLE TO DUPLICATE PROBLEM BEFORE REPAIR. ACCOMPLISHED TAXI TEST, ALSO RAN UP BOTH ENGINES TO TAKEOFF POWER FOR 1 MIN. NO DISCREPANCIES OR MESSAGES NOTED. UNABLE TO DUPLICATE PROBLEM AFTER REPAIR.