If you value your hundreds of hours of flight time and saved liveries, installing a sketchy "free" add-on is a fast track to reinstalling Windows.
Provides free service packs and community-made checklists. System Requirements for FSX aerosoft crj fsx free
Microsoft Flight Simulator X actually comes with a for free as part of the base game. It is much simpler than the Aerosoft version (it lacks a detailed FMC and complex systems). If you value your hundreds of hours of