Hightail Air Charter Bombardier Challenger 350 N818NX for the KCAI model.
These are textures only.
The KCAI Challenger 350 model is required.
It can be found at https://www.alpha-india.net/forums/index.php?topic=29697.msg310551#msg310551
Flightplans available here: https://aibizjetproject.wordpress.com/tag/hightail-air-charter/