As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MODERATE VIBRATION STARTED AROUND 17,000' CONTINUED TO ALTITUDE AND UNTIL ~17,000' ON DESCENT. VIB MORE SUBTLE BELOW 17,000 BUT STILL THERE-PERFORMED AIRFRAME VIBRATION INSP IAW TSM 05-50-00-810-901A. CHECKED RUDDER AND ELEVATORS DISCREPANCY ON L/P 3629272-2FOR L/H I/B GREEN ELEVATOR SERVO LEAKING. REMOVED AND REPLACED G ELEV SERVO (34CE1) IAW AMM 27-34-51. LEAK CHECK AND OPS CHECK OK. NO DEFECT NOTED AT THIS TIME