The author and illustrator of such classic books as Cathedral, Pyramid, and Castle, Caldecott Medal winner David Macaulay here continues in the vein of his book The Way Things Work to reveal in captioned drawings how an airplane that weighs as much as a hundred elephants can stay up in the sky for hours at a time. From the engine that provides the forward thrust and wings that lift the plane to how the cockpit controls work and how airports keep things running smoothly, Macaulay and co-author Sheila Keenan explain these modern marvels for readers 6 to'.