What was found
NR 1 ENGINE VIBRATION. REJECTED TAKE OFF WAS PERFORMED DUE TO HIGH ENGINE VIBRATION INDICATION BETWEEN 71KTS AND 99KTS. ENGINE 1 VIBRATION CHECK WAS PERFORMED SATISFACTORILY IAW AMM 71-00-00-710-009-B, REV 76. VIBRATION OF BEARING 1 IS MORE THAN 6 U, IAWTSM 77-00-00-810-864-A REV 76 CHECK OF THE ENGINE N1 VIBRATION SENSOR (4002EV) IS OUT OF LIMITS, IT`S NECESSARY REPLACE, THIS REPLACE IS CONTROLLED UNDER WO 19854304 ON NEXT MAINTENANCE OPPORTUNITY.