Airframe is a novel by the American writer Michael Crichton, his eleventh under his own name and twenty-first overall, first published in 1996, in hardcover, by Knopf and then in 1997, as a paperback, by Ballantine Books. The plot follows Casey Singleton, a quality assurance vice president at the fictional aerospace manufacturer Norton Aircraft, as she investigates an in-flight accident aboard a Norton-manufactured airliner that leaves three passengers dead and 56 injured. Airframe remains one of Crichton's few novels not adapted to film. Crichton stated this was due to the great expense needed to make such a film. The novel's dense technical details for the accident investigation may also have hindered cinematic adaptations. Source: Wikipedia (en)