The Boeing Business private jet charter is a corporate version of the Boeing 737-700, which was first available on to the charter market in September 1999. It features the Boeing 737-700's airframe but combines it with a strengthened wing, fuselage centre section and up rated landing gear. These enhancements mean that private flights customers buying a BBJ can have the option to have it delivered with up to 10 additional fuel tanks compared to a standard Boeing 737, giving BBJ superb range. The interiors are all custom built and seating can range from 18 seats in opulent luxury through to 48 seat business class interiors.