| Repository | Strengths | Notes | | :--- | :--- | :--- | | | Largest library, active user reviews | Requires free registration (low-speed downloads) | | AVSIM Library | High-quality curated files | Free registration; search filters by FS2004 | | Simviation | User-friendly interface, screenshots | No registration required for many files | | FlyAway Simulation | Simple categories, direct downloads | Smaller library but stable links | | Archive.org (FS2004 Collection) | Preservation of abandoned addons | Contains hard-to-find older files |
Most FS2004 freeware comes in .zip format. Installation typically involves: Moving aircraft folders into the /Aircraft directory.
You need these tools before adding planes or scenery. They fix memory leaks and graphical glitches.