As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE VISIT: ELEVATOR VIBRATION (BUZZ) WHEN SLIGHT PRESSURE APPLIED EITHER UPOR DOWN, FELT AT ALL ALTITUDES AND SPEEDS IN ALL CONFIGURATIONS.ALSO FELT ON GROUND IN COCKPIT. REMOVED AND REPLACE I/B ELEVEVATOR SERVO CONTROL LT IAW AMM 27-34-51-400-001-A, PERFORMED ADJUSTMENT OF THE ELEVATOR LT IAW AMM 27-34-00-820-003-B,PERFORMED OPERATIONAL TEST OF THE ELEVATOR IAW AMM 27-34-00-710-001-A TEST IS OK. AND PERFORMED I/B ELEVATOR SERVO CONTROL OSCILATION LT IAW AMM 27-34-00-200-002-A. SUPPLEMENTAL ACTION: CORRECTED FH/FC.