What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On July 23, 2009 at 1235 local time, a Beechcraft BE-C90, N405DD owned and operated by the university of north dakota sustained substantial damage during takeoff at Bismarck, ND. No injuries were reported to the crew of two or passenger on board the aircraft. Shortly after takeoff passing through 300 ft. AGL the cabin door opened causing damage to the door, door assembly and fuselage. The aircraft returned and landed without further incident. After visual inspection of the door and consulation with techanical personnel from Hawker Beechcraft it was determined that door would not be able to open in flight had it been properly secured prior to takeoff.
As the FAA filed it
ON JULY 23, 2009 AT 1235 LOCAL TIME, A BEECHCRAFT BE-C90, N405DD OWNED AND OPERATED BY THE UNIVERSITY OF NORTH DAKOTA SUSTAINED SUBSTANTIAL DAMAGE DURING TAKEOFF AT BISMARCK, ND. NO INJURIES WERE REPORTED TO THE CREW OF TWO OR PASSENGER ON BOARD THE AIRCRAFT. SHORTLY AFTER TAKEOFF PASSING THROUGH 300 FT. AGL THE CABIN DOOR OPENED CAUSING DAMAGE TO THE DOOR, DOOR ASSEMBLY AND FUSELAGE. THE AIRCRAFT RETURNED AND LANDED WITHOUT FURTHER INCIDENT. AFTER VISUAL INSPECTION OF THE DOOR AND CONSULATION WITH TECHANICAL PERSONNEL FROM HAWKER BEECHCRAFT IT WAS DETERMINED THAT DOOR WOULD NOT BE ABLE TO OPEN IN FLIGHT HAD IT BEEN PROPERLY SECURED PRIOR TO TAKEOFF.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.