Incident Summary
According to the pilot, the cabin door opened just as the aircraft was rotated for takeoff. The aircraft then impacted the ground in a nose-down attitude, resulting in the shearing of the main landing gear. The aircraft subsequently slid to a stop on the runway.
Pilot Report
The pilot reported that the door opened abruptly during the rotation phase of the takeoff. Following the door opening, the aircraft descended and struck the ground forcefully. The main landing gear was sheared off during the impact, and the aircraft continued sliding along the runway until coming to rest.
Emergency Procedures
The aircraft flight manual provides guidance for handling an unlatched door in flight. According to the manual, if the door becomes unlatched during flight, it will trail in an open position approximately three inches open. The recommended procedure is to return to the airfield and land in a normal manner.
Conclusion
No further details regarding the circumstances of the door opening or the overall flight were provided in the source. The incident description is based solely on the pilot's statement and the emergency procedures outlined in the flight manual.