As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING POST FLIGHT, DISCOVERED LT MAIN GEAR DOOR HAD SEPARATED FROM THE ACFT. CREW REMARKED THEY FELT A SLIGHT MOMENTARY VIBRATION AFTER TAKEOFF. ALL INDICATIONS NORMAL AND ACFT CONTINUED TO DESTINATION. CREW STATED WHEN THE VIBRATION WAS FELT ACFT WAS OVER LAKE MICHIGAN. BOTH HINGE POINTS AND THE PUSH PULL ROD FASTENING THE DOOR TO THE GEAR WERE BROKEN. NO OTHER DAMAGE NOTED.