As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN CRUISE FLIGHT WITH PATIENT ABOARD. TWO LOAD BANGS WERE HEARD. A PRECAUTIONARY LANDING WAS MADE AT DCU. LANDED AIRCRAFT AND INSPECTED DOORS. NOTHING WAS FOUND. RESUMED THE FLIGHT AND APPROXIMATELY 2 MIN LATER A LOUD BANG BEGAN ACCOMPANIED BY VIBRATION AIRCRAFT WAS HALF MILE NORTH OF HUNTSVILLE INTERNATIONAL AIRPORT. AIRCRAFT WAS LANDED AT HSV. PATIENT WAS TRANSPORTED BY GROUND. FOUND LOWER ELASTOMERIC BEARING OF RIGHT HAND FORWARD TRANSMISSION LIFT LINK FAILED. REPLACED WITH SERVICEABLE LIFT LINK AND AIRCRAFT RETURNED TO SERVICE.