The airplane impacted Runway 23 at 1211 Pacific time, shortly after takeoff. The Commercial pilot and sole occupant sustained serious injuries; the airplane was substantially damaged. Visual conditions prevailed. According to a witness, the airplanes takeoff roll and initial climb appeared normal. When the airplane reached about 100 feet agl, the nose pitched down and remained in this attitude until impact. The airplane came to rest approximately 700 feet from the end of Runway 23.
