What was found
00-20 AT CR FLT AC BEGAN TO SHAKE ENG NR 1 N1 VIB = 6.0 N2 VIB = 2.2 VIB ABATED WHEN NR 1 THROTTLE PULL TO IDLE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
00-20 AT CR FLT AC BEGAN TO SHAKE ENG NR 1 N1 VIB = 6.0 N2 VIB = 2.2 VIB ABATED WHEN NR 1 THROTTLE PULL TO IDLE.