Do you love flying cargo planes in flight simulation games? If so, you might be interested in the Fs2004 PMDG747 400f Cargo Addon, a simulation model of the Boeing 747-400F freighter that adds realism and immersion to your flying experience. In this article, we will review the features and benefits of this addon, and show you how to install and activate it with a serial key. We will also provide some troubleshooting tips in case you encounter any problems with the addon. Read on to find out more about this amazing addon for Fs2004.