As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, THE CREW REPORTED A VIBRATION AND RETURNED TO PIT. MAINTENANCE INSPECTED AND PERFORMED A FUNCTIONAL CHECK FLIGHT WITH THE CREW AND COULD NOT DUPLICATE THE VIBRATION. AFTER THE SATISFACTORY FUNCTIONAL CHECK FLIGHT, THE AIRCRAFT WAS RELEASED FOR SERVICE.