What was found
AIRCRAFT REJECTED TAKE OFF AT 70 KNOTS WITH A GROSS WEIGHT OF 56 100 KG DUE TO EICAS MESSAGE, MASTER CAUTION & ENG CONTROL LIGHT TURNED ON. PERFORMED THE QRH 7.14 PROCEDURE, NO CONFIRMING THE FAILURE. PERFORMED BITE TO BOTH EEC IAW MM FIM 31-52 TASK 801 PROCEDURE, NO FAILURE DETECTED. AS A PRECAUTIONARY ACTION, THE LT TR DEACTIVATION PROCEDURE WAS PERFORMED IAW AMM 78-00-00, ALL CORRECT. THE HIGH ENERGY STOP INSPECTION WAS NOT NECESSARY DUE TO THE MAXIMUM GROSS WEIGHT 62 000 KG & BRAKES ON SPEED 110 KNOTS WERE NOT EXCEEDED IAW MM 05-51-07. AT MEX, IN OVERNIGHT CHECK, REPLACED THE LT S5 & S6 SWITCHES OF M1766 PACK IAW AMM 76-11-07 & THE LT TR TEST WAS PERFORMED IAW AMM 78-31-00, ALL CORRECT.