What was found
VIBRATION - NOISE ENCOUNTERED IN FLIGHT. STRONG VIBRATION FROM TAIL, FELT ALL LOCATIONS. STOPPED WHEN SLOWED BELOW 280 KIAS. FOUND MULTIPLE POSSIBLE ISSUES, LEADING EDGE TAPE WAS PEELING AND BUNCHING UP ON THE LE OF VERT STAB AND ELEV/RUD FREEPLAY CHECKS FAILED- WORN SERVO ROD ENDS. RETAPED POLY TAPE ON VERT STAB AND PERFORMED ELEV BLUE AND YELLOW SYSTEM ROD END REPLACEMENT- ALSO REPLACED RUDDER HINGE BEARING PLATES AT POS 1 THRU 5 AND 7 AT HMV/SSR.