The airplane collided with the ground shortly after takeoff at 1030 Eastern time and was substantially damaged. The private pilot and front seated passenger were fatally injured. The two rear-seat passengers were seriously injured. The flight was originating at the time of the accident. Visual conditions prevailed. A witness later reported observing the takeoff; the airplane was at an extreme angle when it passed by. He watched as the pilot turned into the wind, flying very slowly with approximately 10-15 degrees of flaps deployed. The witness stated the airplane turned almost a full 180 degrees; he believed that the left wing stalled at that point. The airplane then descended straight down from approximately 150 feet agl.
