As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STARTING DESCENT, VIBRATION/NOISE WAS AUDIBLE INSIDE ACFT. NO INDICATIONS OF SYSTEM ISSUES OTHER THAN THE VIBRATION BUZZ NOISE. FLT DIVERTED. WHEN LANDING GEAR WAS EXTENDED FOR LANDING VIBRATION/NOISE WENT AWAY. ACFT LANDED WITHOUT INCIDENT. AIRCRAFT WAS TURNED OVER TO SERVICE CENTER. STUD ON LEFT GEAR DOOR ROD WAS BROKEN. GEAR DOOR RECEIVED ABRASION DAMAGE FROM CONTACT WITH PAVEMENT.