Based on common X-Plane scenery file naming conventions and community forums, "amsterdam-xp12.rar" likely refers to one of the following versions of Schiphol airport: 1. FlyTampa Amsterdam (EHAM) for XP12
Recommended graphics settings to maintain FPS, as this scenery is known to be performance-heavy. amsterdam-xp12.rar
Placing the FlyTampa_Amsterdam_0_Airport and related folders into your Custom Scenery directory. Based on common X-Plane scenery file naming conventions
Several free versions exist on the X-Plane.org forums, such as the . The documentation for these usually specifies: amsterdam-xp12.rar