I have been trying to locate a picture of the B747F upper deck layout. Basically it is a standard 747 upper deck without the flight deck rear bulkhead that has the door fitted. Access to the main deck is by a retractable, narrow set of steps. There is no need for a flight deck door as normally, only the operating crew is on board although some carriers used to take passengers who were usually employees or dead heading crew but that was before 9/11. The only time you are likely to have pasengers on the upper deck, is on a horse charter where the grooms travel with the cargo of horses.