Code: Select all
C:\Program Files (x86)\Steam\steamapps\common\FSX\DLC\379243\SimObjects\Airplanes
C:\Program Files (x86)\Steam\steamapps\common\FSX\DLC\548760\SimObjects\Airplanes
The first entry is for FSX-SE, and specifies the location of two DLC aircraft that were purchased through Steam. The second entry is for P3Dv4, and specifies a folder containing any number of additional add-on aircraft. You can also create an entry for P3Dv3 by adding a [ExtraSimObjects.P3Dv3] section. The folder you specify should be the parent of the individual aircraft folders. You can add as many folder references as you want in each section. You can have aircraft and rotorcraft vehicles in the same folder tree - it is not necessary to keep them separate as FSX/P3D does.
Note, this feature is also documented in Appendix C of the Getting Started section.