As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CONTROL COLUMN HAD AN ABNORMAL VIBRATION AT 10K, 250-310KTS. EXCESSIVE VIBRATION WORSENING WITH AIRSPEED. EMERGENCY DECLARED. INSPECTED AND FOUND THE NR 7 AND 8 RIGHT ELEVATOR ATTACH HINGE BEARING PLATES TO HAVE SOME PLAY. REMOVED AND REPLACED THE ELEVATOR ATTACH HINGE BEARING PLATES IAW AMM 27-31-11. ELEVATOR CHECKED GOOD AT THIS TIME.