What was found
LOW PRESSURE VIBRATION NR 2 ENGINE AT ALTITUDE. RAN QRH, DESCENDED AND REDUCED SPEED, VIBRATIONS IN GREEN AT 3.0. DECLARED EMERGENCY, LANDED WITHOUT INCIDENT. INSPECTED ENG NR 2 FAN BLADES AND FOUND NO DEFECTS. PLACED ENGINE NR 2 ON NON-MEL DMI FOR FAN MX WITHIN 50FH.