The document discusses the achievements and lives of the Wright brothers, Orville and Wilbur Wright. It summarizes that they invented and built the world's first successful airplane. On December 17, 1903, the brothers made the first controlled, powered and sustained heavier-than-air human flight. They developed their airplane, called the Flyer, into the first practical fixed-wing aircraft. The document then provides biographical details about Orville and Wilbur Wright and their journey to achieving controlled flight.