Once the library is installed, any other scenery that references AFL_LIBRARY objects will be able to find them, as long as your scenery_packs.ini file is correctly ordered (the library should be placed below any airports that use it).
Once you are in the cockpit, accessing the AFL Library is done via a small icon on the left side of the screen (a gear or tablet icon) or via the X-Plane top menu bar ( Plugins -> AirfoilLabs -> Configuration ).
Many popular freeware airports available on sites like X-Plane.org or forums rely on the AFL Library. If you download a custom airport scenery that was built using AFL assets, but you don't have the library installed, the simulator won't know where to find those objects.
Security & licensing
Airfoil Labs frequently updates the library to remain compatible with X-Plane 11.55 (the final stable version). To update:
When you install it correctly—keeping anti-virus exclusions active and managing your persistent folder—the AFL Library transforms X-Plane 11 into a living, breathing aviation world where every switch flip has a consequence. It is, without exaggeration, the library that separates the pilots from the passengers.
If you continue to see errors for AFL_LIBRARY after following these steps, the scenery that depends on it might be referencing an outdated version of the library, or the scenery might require a specific, unmodified installation. Afl Library X Plane 11
Without a properly functioning AFL Library, an AirfoilLabs plane becomes a standard, non-functioning 3D model.
Since there is no standalone download, the AFL Library is installed automatically when you install an AirfoilLabs aircraft. However, manual installation is often required because AFL planes do not use the standard X-Plane .exe installer.
| Feature | Default X-Plane 11 | AFL Library | | :--- | :--- | :--- | | | Resets on reload | Saves everything (oil, tire wear, flap damage) | | Walkaround | None | Full 3D external inspection | | Fluids | Just fuel | Oil, Hydraulic fluid, De-icing fluid | | Deterioration | Instant binary (On/Off) | Gradual (50% worn brakes → 100% failure) | | Repair Cost | None (Instant fix) | Simulated (Resource management via hangar) | Once the library is installed, any other scenery
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Start X-Plane 11 to the main menu, then close it immediately. This forces the simulator to detect the new folder and log it. Open scenery_packs.ini with a text editor like Notepad. Scroll to find SCENERY_PACK Custom Scenery/AFL_Library/ .
If you download a custom airport and find that objects like signs or carts are missing, or if you see an about a missing library, you likely need to install the AFL Library. It serves as a shared resource that prevents every scenery creator from having to include the same duplicate files in every single download. Installing Add-On Scenery Packs - X-Plane Support If you download a custom airport scenery that
This error occurs if X-Plane searches for the AFL Library but cannot find it.
X-Plane 11 , "AFL" typically refers to the .afl file extension