The 747-400F (Freighter) is an all freight version which uses the fuselage design of the 747-200F. The aircraft's first flight was on 4 May 1993 and it entered service with Cargolux Airlines on 17 November 1993. Major customers include Atlas Air, Cargolux, China Airlines, Korean Air, Nippon Cargo Airlines, Polar Air Cargo, and Singapore Airlines. The -400F can be easily distinguished from the passenger -400 by its shorter upper-deck hump.
The United States Air Force has purchased seven 747-400Fs to act as "Airborne Laser" carriers, designated YAL-1A. The aircraft are heavily modified to carry a nose mounted turret and Chemical Oxygen Iodine Laser (COIL) equipment.
