Incident Overview
Witnesses reported that the pilot aborted the initial takeoff during the ground roll due to a loss of power from the left engine. The pilot subsequently returned to the ramp, completed a run-up, and initiated a second takeoff.
Flight and Maneuvering
After the airplane lifted off, it was observed banking to the right and left several times. Each time the airplane banked to the right, the cabin door opened. Despite the door opening, the pilot continued the takeoff and climbed to an altitude of approximately 300 feet. At that point, the airplane suddenly and steeply turned left and descended into level open terrain.
Post-Accident Examination
Following the accident, the right side cabin door locking mechanism was found in the unlocked position, with the locking pins retracted. Additionally, a fuel manifold valve diaphragm on the left engine was found torn.