At 1606 Pacific time, a Beech 3NM crashed while on approach to Lake Riverside Airport. The pilot and two passengers were killed. A witness said the airplane flew parallel to the right side of runway 29, then turned crosswind at the end of the runway and the landing gear came down. The airplane flew downwind and turned base. As it started the turn to final, the airplane appeared to be past the extended centerline of the runway. The witness said the airplane abruptly increased the left turn so that the bank angle approached 90 degrees and the nose moved quickly to a nearly vertical position. The airplane maintained this attitude until it collided with the ground.