By 1992, the airline had expanded to provide air service with many flights being operated under EAS contracts in Colorado, Nebraska, South Dakota, Minnesota, Iowa, Missouri, Kansas, Mississippi, Alabama, Georgia, and South Carolina, Service in the southern U.S. began on June 6, 1992. By 1993 the airline was operating several Cessna 402 twin prop aircraft in addition to eight Beechcraft Model 99 turboprops and five Beechcraft 1900C turboprops with the latter being introduced in 1990.http://library.erau.edu/worldwide/find/online-full-text/ntsb/aircraft-accident-summaries.htm AAR 94-01-SUM Aircraft Accident / Incident Summary Report; Controlled Flight into Terrain; GP Express Airlines N115GP; Beechcraft C-99; Shelton, Nebraska; April 28, 1993
