NZFF

Torquesim are on the cusp of releasing their BN-2 Islander for XP11. I've been following this project for some time now and it looks great.
Press release here

Loved the Islander ... done many a skydive from one in Headcorn (Lashenden, Kent, UK)

You Tube Flight Sim content creator Jon Fly has been granted early pre-release Review access to the X-Plane 11 BN-2 Islander and has up-loaded from his Twitch Channel Live Stream Broadcast for a early look. It's an hour long in-flight and in-depth look around the BN-2 Islander while in flight with some interesting commentary chat with his Twitch Channel subscriber viewers online. NEW TorqueSim BN-2 Islander World Debut - X-Aviation.com

Now available for US$ $39.95 TorqueSim BN-2 Islander

Another video from Luna's World released X Plane 11 - Torquesim BN 2 Islander