At about 14:30 PST, a Beech 95 hit the ground after an inadvertent shutdown of one engine while landing at the Henderson airport. Neither the instructor nor the student pilot was injured. Investigators determined that the aircraft was on approach when the student pilot, who was flying, changed fuel tanks. He inadvertently shut off fuel to the right engine as he was looking for traffic. There was confusion in the cockpit and the appropriate emergency procedures were not executed. The flight instructor had assumed control when the aircraft struck the ground with a windmilling propeller.