As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THERE WAS A LOUD NOISE ON BOTH SIDES OF THE COCKPIT AND AIRFRAME VIBRATION AT AIRSPEEDS ABOVE 310 AT 10,000 TO 20,000 FOOT ALTITUDES. INSPECTED FLAPS, GEAR WELL AREAS, FLIGHT CONTROLS. RAN FLIGHT CONTROLS THRU. PRESSURIZED AIRCRAFT TO 6 PSI. INSPECTED MEC AREA AND DOOR SEAL. INSPECTED FORWARD EQUIPMENT AREA DOOR SEAL. NO DEFECTS FOUND.