What was found
CREW ADVISED OF SEVERE AIRFRAME VIBRATION AT 350 KNOTS. IT CONTINUED DOWN THROUGH 250 KNOTS AND THEN STOPPED. UPON ARRIVAL, FOUND RIGHT ELEVATOR TRIM TAB TORN OFF AND STICKING UP. SUPPLEMENTAL DATA UPDATE: THE RIGHT ELEVATOR CONTROL TAB FRACTURED INTO TWO PIECES AT THE NR ONE TAB HINGE POSITION. THE TAB WAS REPLACED AND MINOR DAMAGE TO THE ELEVATOR ASSEMBLY WAS REPAIRED.