And boy... Was I in for a treat. But first things first.
Installation is easy as with any ORBX scenery. Double-click the executable file and off we go. ORBX allows you to configure some stuff that will allow you to better control the frame rate impact of the scenery in your system. Pretty useful.
This is a companion discussion topic for the original entry at https://www.helisimmer.com/reviews/orbx-ennk-narvik-airport-for-fsx-and-p3d/