This U.S. industry comprises establishments primarily engaged in providing air transportation with no regular routes and regular schedules (except nonscheduled chartered passenger and/or cargo air transportation). These establishments provide a variety of specialty air transportation or flying services based on individual customer needs using general purpose aircraft. Illustrative Examples: Aircraft charter services (i.e., general purpose aircraft used for a variety of specialty air and flying services) Aviation clubs providing a variety of air transportation activities to the general public Cross-References. Establishments primarily engaged in--