What was found
DURING CLIMB LT ENGINE FAN VIB REACHED 4.1 NO INDICATION OF NOISE, HOWEVER AT CRZ VIB SUSTAINED AT 1.2 TO 1.9. PERFORMED TASK 71-05 FT 856, FOUND CONNECTOR LOOSE AT FWD ACCELEROMETER. RESECURED CONNECTOR IAW AMM 77-31-01. GROUND RAN NR 2 ENGINE IAW AMM 71-000-00, ENGINE VIBRATION FOUND IN LIMITS. OK FOR SERVICE.