 Boeing uses two characteristics, fuselage length and range, to define their 777 models. Fuselage length affects the number of passengers and amount of cargo that can be carried; the 777-200 and derivatives are the base size, and the aircraft was stretched into the 777-300 in 1998. In terms of range, the aircraft has been categorized into three segments based on design criteria. The A-market would cover domestic and regional operations, the B-market would cover routes from Europe to the US West coast and the C-market the longest transpacific routes.
