(09 Jan 2017, 9:53 pm)Andreos1 wrote The maximum take-off weight is 4.5t according to wiki.
So as long as the person can get through the doors and fit in the seats (there's no aisle), then it should be ok.
https://www.google.co.uk/search?q=trislander&tbm=isch&prmd=ivns&ei=_AV0WKPLNeXRgAb9xpUw&start=40&sa=N#mhpiv=6
In 2019 I may be going on a Twin Otter to St Barts in the Caribbean