West Coast Aviation Services Cessna 560XL Citation XLS+ N101ER for the KCAI model.
These are textures only.
The KCAI Cessna 560XL Citation XLS Plus model is required.
It is available here: https://www.alpha-india.net/forums/index.php?msg=394758
Flightplans available here: https://aibizjetproject.wordpress.com/tag/west-coast-aviation-services/