Vieques Air Link -opf Seaborne Airlines- Britten-Norman BN-2 Islanders for the HTAI model.
These are textures only.
The HTAI Britten-Norman BN-2 Islander model is required.
It can be found at http://htai-models.com/downloads.html
The converted P3Dv4 model can be found here:
Flightplans available here: https://www.alpha-india.net/forums/index.php?topic=30092.msg317601#msg317601