What was found
ON TAKEOFF ROLL, ENGINE 2 EVM COMP READ 5.0 UNITS WITH STRONG VIBRATION. TAKEOFF ABORTED BELOW 80 KNOTS. REMOVED AND REPLACED FOUR EACH FAN BLADES ON NR 2 ENGINE PER MM 72-31-02 PERFORMED ENGINE RUN AT 95 PERCENT N1 EVM COMP 7 READING, OPS CHECK GOOD. REPLACED DAMGAED FAN BLADES. (M)