At about 1534 Pacific time, the two aircraft collided in flight while approaching to land. The midair collision occurred at a location and in a flight direction consistent with the 172 entering the left-hand traffic pattern, and the 150 being in the patterns downwind leg. All four aboard both aircraft were fatally injured; a person on the ground also was killed. Both airplanes were fragmented during the midair collision and were subsequently destroyed upon falling nose down into buildings, automobiles and parking lots. A witness reported continuously observing both airplanes cruise toward each other for at least five seconds preceding the collision. No maneuvering was observed during the seconds immediately prior to the impact.
