As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 1816 -ATB- DURING CLIMB CREW REPORTED LEFT ENGINE VIBRATIONS UP TO 4.3 AND BEING FELT IN THE CABIN. AT LEVEL OFF, ENGINE VIBRATIONS REDUCED TO 1.0. CORRECTIVE ACTION: PERFORMED NUMBER 1 FAN BALANCE AND VIBRATION SURVEY. OPS CHECK GOOD. (4614772)