The good old Tri, noisy but great fun! Not STOL like the Islander but the cheapest way to move 17 punters going. I remember G-AYWI too, it was the first production model (G-AYTU was the cut and shut), left the islands in the mid-80s and I heard was later crashed due to fuel exhaustion. Flying them is a dim distant memory now but apparently BN were trying to flog new ones at this year's Farnborough!