What was found
SHIP 8120 -DIV- TO DTW DUE TO #1 ENGINE N2 VIBRATION INDICATION. THROTTLE WAS REDUCED TO STOP VIBRATION INDICATION, VIBE CAUTION MESSAGE REOCCURRED EACH TIME THROTTLE ADVANCED. CORRECTIVE ACTION: #1 ENGINE REPLACED. (LP# 0209612, 4898355, 0209953) PW1521G3