To install aircraft add-ons for Prepar3D, a number of files must be copied to existing Prepar3D folders. In most cases, it is not appropriate overwrite any files (i.e., if a file with the same name as one being copied already exists in the directory, do not overwrite the existing file with the new one).

Most aircraft add-ons come as an ‘Aircraft_Name’ folder named according to the aircraft’s name (e.g., F-35 Lightning II) with contains the aircraft contents.

The Aircraft_Name folder and all of its contents should be copied to the following folder:

C:Users<UserName>DocumentsPrepar3D v<VersionNo> Add-ons

*If another folder is preferred, the aircraft add-on will need to be registered by modifying the add-ons.cfg file located at C:ProgramDataLockheed MartinPrepar3D v<VersionNumber> with the path of your add-on aircraft.

For example:                                                                                         [Package.0]                                                                                                         PATH=C:My_F-35_Addon                                                                                       TITLE=F-35                                                                                                               ACTIVE=true                                                                                                 REQUIRED=false

You can use the Scenery Library to find, add, delete, and organize scenery, or to add, delete, or modify the cache of the scenery files that load as you fly between scenery areas. Access the Scenery Library from inside the simulation within the World menu, under Scenery Library

The Scenery.cfg file stores the changes you make to your Scenery Library through the Prepar3D User Interface. You may also manually edit this file using a text editing program such as notepad.exe.

Path to Scenery.cfg on

• Vista/Windows 7: \Users(user name here)AppDataRoamingLockheed MartinPrepar3D
• Windows XP: \Documents and SettingsAll UsersApplication DataLockheed MartinPrepar3D
• Windows 1011: \ProgramDataLockheed MartinPrepar3D (version)

A detailed article about adding scenery is available in the Prepar3D Learning Center under the article, Scenery Library.

Note: The Scenery.cfg file at the root directory where Prepar3D.exe is located should not be edited and that any manual editing of the Scenery.cfg file could result in unwanted scenery configuration errors.

Most add-ons developed for FSX/ESP will install and run without issue, there are some install packages which are hard-coded to only install into a FSX install folder dictated by a FSX install registry key on your computer. You can use a tool, like FSX Registry Utility, to add a FSX registry key to your computer pointing to a location of your choice. You can add a FSX registry key pointed to your Prepar3D installation folder using this tool so that the FSX-specific installers will now be able to be installed into your Prepar3D installation folder.