As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO THE FIELD DUE TO CREW REPORTED VIBRATIONS INFLIGHT. FELT IN THE AIRFRAME AND YOKE. PILOT SAYS THEY WERE VERY AGGRESIVE 200 AGL AND ABOVE 270 KTS. INSPECTED ACFT FLIGHT CONTROLS NO DEFECTS NOTED. RESEALED FWD MLG FAIRING FWD EDGE IAW AMM AND SRM.