The Boeing 757 is a mid-size, narrow-body, twin-engine jet airliner manufactured by Boeing Commercial Airplanes. Passenger versions of the 757 can carry between 186 and 279 passengers, and have a maximum range of 3,100 to 3,900 nautical miles (5,700 to 7,200 km), depending on variant and seating configuration. The Boeing 757 has been produced in two fuselage lengths: the original 757-200 entered service in 1983, and the stretched 757-300 entered service in 1999. A production freighter version, the 757-200PF, has been sold along with a combi model, the 757-200M. Passenger 757-200s have also been converted to the 757-200SF freighter specification.