As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT, LEFT ENGINE VIB OF 1.9 INDICATION, REDUCED N1 TO CLIMB THRUST IN ORDER TO MAINTAIN A GREEN VIB INDICATION WITHIN .05. IT WAS NECESSARY TO REDUCE N1 TO 67.5 TO MAINTAIN A GREEN INDICATION (A 3 THRUST LEVER KNOB WIDTH SPLIT) RETURNED TO DEN. DESCENT, REDUCED THRUST SETTINGS. LEFT ENGINE REMAINED OUT OF YELLLOW ON TOUCHDOWN, WITH REVERSE THRUST DEPLOYED, ENGINE VIB INDICATION WAS A YELLOW 2.6. MX REPLACED NR 1 ENGINE FAN BLADES. OPS CHECK GOOD.