Catalina Aerospace Hawker 900XP for the converted HTAI -winglet- model.
These are textures only.
The HTAI BAe HS.125-800 model is required.
It can be found at http://htai-models.com/downloads.html
The converted P3Dv4 (winglet) model can be found here:
Flightplans available here: https://aibizjetproject.wordpress.com/tag/catalina-aerospace/
EDIT 11 JUL 2020: paint updated based on latest paintkit