As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YNG - FLT 5709 - AIRCRAFT SHOOK DURING DESCENT BETWEEN AND AIRSPEED OF 220-180 KNOTS. VIBRATION STOPPED WITH RUDDER PRESSURE. MAINTENANCE INSPECTED RUDDER FOR DAMAGE OR DEFECTS TO HINGES AND BRACKETS AND PERFORMED OPERATIONAL TEST OF RUDDER BOOST SYSTEM FOR 1 TIME FERRY FLIGHT TO SBN. (M)