The LCF aircraft are owned by Boeing and operated by Atlas Air. It is an ungainly looking thing. The LCF is a common type rating with the 747-400 and other than having Pratt engines and operating in pounds as opposed to Kilograms it flies just like our other -400s. It does cruise a little slower and there is a constant low background vibration that's absent on the other models. There is no APU, the tail swings open to load and unload, the massive cargo area is unpressurized (although heated) and the pressure bulkhead is just aft of the galley.