As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GAS COMPRESSION SPRING FAILED TO MAINTAIN THE DOOR LATCH IN A CLOSED POSITION. DURING CRUISE THE DOOR UNLATCHED. AFTER SHORT TIME IN FLIGHT SAFETY CATCH FAILED CAUSING THE DOOR TO OPEN. WHEN THE DOOR OPENED BOTH HINGES FAILED, CAUSING THE DOOR TO FULLY SEPARATE FROM THE AIRCRAFT.