It seems that Gap is often used, maybe even a deployment base, for these fine and rare planes! None where in use today, but seem often to be used for (military) parajumpers.
The DHC6 was parked inside a hangar at the former ALAT-area (East side) and I think this is out of bounds. Luckily the door was open. The Turbo Porter was in a closed hangar just North of the through road passing the Northern approach. The hangar had a logo of Pilatus on it which caught my attention luckily, otherwise I would have driven on. The verry friendly technicians here had no problem me taking pictures of it inside.