At about 1045 Pacific time, a Piper PA-36-375 collided with a Grumman American AA-5B while both airplanes were attempting to land at Bottimore Ranch Airport. Neither pilot was injured. The pilot of the Piper said he was landing when he heard the collision, then noticed the Grumman, which had just touched down on the same runway. He went around and diverted to Franklin Field Airport. The pilot of the Grumman said the aircraft went all over the place just after the main landing gear touched down. He said he did not know he had been hit by another airplane until he saw the Piper flying away from him.