As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT ENG VIBRATION IN AMBER BAND. VIBRATION NORMAL AT IDLE. OCCURRED AT THRUST REDUCTION AT TOP OF CLIMB. COMPLIED WITH STEPS 1-4 OF FIM 71-05-00 FIG 108 WITH NO DEFECTS NOTED. COMPLETED ALL REMAINING STEPS OF FIM 71-05-00 FIG 108. VIBRATION SURVEY C/W ALL WITHIN LIMITS.