Here is a list of other vendors and suppliers that provide many of the components and parts for the 747 and other aircraft simulators for Boeing and Airbus products and aviation related topics

FlightGear - The primary flight simulation software that performs the computational and graphical processing is the very popular open source FlightGear which has a dedicated interface to the simulator.

747 Project - An application with the FlightGear software

Aviation Schools -Directory of flight schools and aviation schools.Helicopter pilot training.

ATC Flight Simulators - FAA certified flight simulators for single and light twin engine aircraft

Mike's Flight Deck - Many, many links to sites about simulation and related topics

Mouser Electronics - Switches, relays, stepper motors, cables, connectors, and a big, big catalog