Two small airplanes with a combined four people aboard collided over the southern California mountains, sending one crashing into a ridge and killing its pilot while the second airplane was able to maneuver a wheel-less landing on a nearby golf course, officials said. Rescuers searched through the wreckage of the airplane that crashed and sparked a fire in rocky terrain in Calabasas on Monday and found a body that was believed to be the only person aboard, Los Angeles County sheriff's spokesman Steve Whitmore said. Three people on the airplane that landed on the golf course had minor injuries. One was hospitalized for back pain. The National Transportation Safety Board (NTSB) and the Federal Aviation Administration (FAA) are investigating the collision.