At about 1139 Pacific time, the airplane collided with terrain, fatally injuring the pilot. Visual conditions prevailed. According to a witness, the airplane appeared to be doing aerobatics. He saw it complete a loop and began a second one. The airplane appeared to be fighting the wind and moving very slowly. The airplane then came down, completing the second loop. The airplane then went back up into a third loop and came straight down, out of sight, and into the trees. Another witness stated the airplane appeared to stall and descend in a tailspin.