PJD Software Boeing 747 - description from Softdepia.com:
This package will add a Boeing 747-400 and a Boeing 747-200 to your Flight Simulator. The package includes accurate flight models, detailed panels and fully functioning inertial navigation systems. The 747-400 has a digital "glass cockpit" with multi function display screens and has a flight management computer (FMC) that incorporates the inertial navigation system (INS). The INS has five pre set routes which will take you on a round the world flight and can also be programmed with your own routes. The 747-200 has an analogue flight deck with a separate flight engineers panel and also incorporates an inertial navigation system. The INS on the 747-200 has 10 pre set routes which include the same round the world flight as on the 747-400 with the addition of several other flights starting and finishing at London Heathrow. The 747-200 INS can also be programmed with your own routes. The Boeing 747 is compatible with Microsoft Flight Simulator 98 and Microsoft Flight Simulator 2000. A demonstration version of The Boeing 747 is available for download here. The demonstration version is fully functioning but includes a splash screen and is limited to 30 minutes use per session. Please try the demonstration version before registering to determine if this software meets your requirements.
PJD Software Boeing 747 is a "Free to try" program. You can download and try it for an evaluation period.